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Best Serial Port Cards - Buying Guide

Last Updated: 01/16/2019

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Bestselling Serial Port Cards on Amazon

  1. StarTech.com 1 Port Low Profile Native PCI Express RS232 Serial Card with 16950 UART - PCIe Serial C...
  2. StarTech PEX1S553LP 1 Port PCI-Express Low-Profile
  3. Syba Single Port RS-232 RS-422 RS-485 DB9 Serial PCI-Express 2.0 x1 Card - 1 Port Serial PCIe Card M...
  4. IO Crest SI-PEX40108 PCI-Express 2.0 x1 Low Profile SATA 4 Port SATA III PCI-e 2.0 x1 Card
  5. SIIG Legacy and Beyond Series 2 Port (Dual) Serial / RS-232 PCIe Card with 16C550 UART
  6. Syba 2 Port DB9 RS-232 RS-422 RS-485 Serial PCI Card SD-PCI15039
  7. USB to Serial Adapter - Prolific PL-2303 - COM Port Retention - USB to RS232 Adapter Cable - USB Serial
  8. USB to RS422 / USB to RS485 Serial Port Converter Adapter Cable with FTDI Chip. Supports Windows 10,...
  9. AIKE DB9 9-pin Female Adapter RS-232 Serial Port Interface Breakout Board Connector 5Pcs
  10. StarTech.com 4 Port RS232 PCI Express Serial Card w/ Breakout Cable

  #1

StarTech.com 1 Port Low Profile Native PCI Express RS232 Serial Card with 16950 UART - PCIe Serial Card - 1 Port LP RS232 Card

Model: PEX1S952LP   |    Mpn: PEX1S952LP   |    Ean: 6213759728918   |    PartNumber: PEX1S952LP   |   Asin: B002RYTI7I

The PEX1S952LP 1 Port Low Profile Native PCI Express RS232 Serial Adapter Card with 16950 UART adds an RS232 (DB9) Serial Port with data rates up to 460 Kbps to a computer through an available low profile PCIe slot, while relying on a native, single-chip design (Oxford OXPCIe952) that harnesses the capability of true PCI Express - ensuring maximum performance and reliability and reducing the load applied to the CPU by as much as 48% over conventional (bridge chip) serial cards. The 1 port RS232 serial card features a half-height pci express mounting bracket that's designed specifically for low profile/small form factor computer cases, and includes an optional standard height bracket as well. Compatible with a broad range of operating systems including Windows and Linux for easy integration into mixed environments. Backed by a StarTech.com lifetime warranty and free lifetime technical support.

Features

Brand: StarTech   |   Manufacturer: STARTECH.COM

Item Dimensions: 0.8 x 3.6 x 8.39 inches (2.0 x 9.1 x 21.3 cm)   |   Package Dimensions: 2.9 x 5.6 x 6.8 inches (7.4 x 14.2 x 17.3 cm)

Amazon Price: $24.99 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 24 hours
List Price: $24.99

Warranty: Lifetime warranty

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  #2

StarTech PEX1S553LP 1 Port PCI-Express Low-Profile

Model: PEX1S553LP   |    Mpn: PEX1S553LP   |    Ean: 5054480713672   |    PartNumber: PEX1S553LP   |   Asin: B0041ULUX6

The PEX1S553LP PCI Express Serial Card turns a PCI Express slot into an RS232 (DB9) serial connection.

The card is constructed using a native single chip design that lets you harness the full capability offered by PCI Express (PCIe), while reducing the load applied to the CPU by as much as 48% over conventional bridge chip serial cards.

The PCI Express RS232 Serial Adapter Card is compatible with a broad range of operating systems, including Windows 2000/XP/2003/Vista/Windows 7/Server 2008 R2 (32 and 64 bit), Linux Kernel 2.6.11 to 4.11.x, and ships with a low profile/half-height bracket installed, but includes an optional full profile bracket that lets you add a serial port to virtually any computer (regardless of the case form factor).

This product is a replacement for our PEX1S552LP card.

Backed by a StarTech.com Lifetime warranty and free lifetime technical support.

Features

  • Add a RS-232 serial port to your standard or small form factor computer through a PCI Express expansion slot
  • PCI Express Serial Card
  • PCI-e Serial Card
  • Pre-configured for low profile/half-height systems but includes a full profile bracket for versatility
  • Ships with half-height/low profile mounting bracket, includes standard bracket
  • See more on Amazon...

Brand: StarTech   |   Manufacturer: STARTECH.COM

Item Dimensions: 0.79 x 4.13 x 3.15 inches (2.0 x 10.5 x 8.0 cm)   |   Package Dimensions: 1.42 x 5.83 x 8.35 inches (3.6 x 14.8 x 21.2 cm)

Amazon Price: $32.23 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 24 hours
List Price: $34.72 | Used Price: $14.99

Warranty: 1 year warranty

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  #3

Syba Single Port RS-232 RS-422 RS-485 DB9 Serial PCI-Express 2.0 x1 Card - 1 Port Serial PCIe Card MCS9922 Chipset

Model: SD-PEX15021   |    Mpn: SD-PEX15021   |    Ean: 0163121142292   |    PartNumber: SD-PEX15021   |   Asin: B003BYRO7E

Based on one of the best known Serial chipset MCS9901 for best performance. Ideal for connecting to modem, cellular phone, PDA, ISDN terminal adapter, satellite receiver, graphic tablet, bar code scanner, label printer, automated teller machine, GPS, finger print identification, Infra-Red transceiver, packet radio, magnetic card reader, Pos devices, multi-modem dial-up server, digital camera, automation interface, and card reader. Keeps old Serial devices alive.

Features

  • MCS9922 Chipset
  • Compatible with Industrial Standard 16C550 UART. On Chip 256-byte Depth FIFO in Transmit.
  • Transfer Data Rates up to 250Kbps on Each Port. Supports Hardware and Software Flow Control. Supports 5, 6, 7, 8-bit Serial Format
  • Fully Compliant with PCI-Express Base Specification Revision 1.0a
  • Single-Lane (x1) PCI-Express with Throughput up to 2.5Gbps
  • Form Factor: Low Profile
  • See more on Amazon...

Brand: Syba   |   Manufacturer: Syba

Item Dimensions: 6 x 1.5 x 7 inches (15.2 x 3.8 x 17.8 cm)   |   Package Dimensions: 1.6 x 5.7 x 6.8 inches (4.1 x 14.5 x 17.3 cm)

Amazon Price: $15.99 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 24 hours
List Price: $15.99

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  #4

IO Crest SI-PEX40108 PCI-Express 2.0 x1 Low Profile SATA 4 Port SATA III PCI-e 2.0 x1 Card

Model: SI-PEX40108   |    Mpn: SI-PEX40108   |    Ean: 0810154011773   |    PartNumber: SI-PEX40108   |   Asin: B01IDNSUNO

The PCI-e Controller Card gives you an easy way to add additional 4 internal SATA III ports to your computer by a single PCI Express slot. The SATA III ports offer a blazing-fast speed of 6Gbps, while remaining backwards compatible with the SATA I and SATA II specifications. Also, it supports Port Multiplier FIS Based or Command Based switching, ensuring maximum performance. Chipset: Marvell 88SE9215 Compliant with PCI-Express Specification v2.0 and backwards compatible with PCIe 1.x Compliant with Serial ATA Specification 3.0 Supports Communication Speeds of 6.0 Gbps, 3.0 Gbps, and 1.5 Gbps Hot Plug and Hot Swap Supports Native Command Queue (NCQ) Supports Port Multiplier FIS Based Switching or Command Based Switching Compatible with SATA 6G, 3G and 1.5G Hard Drives SATA ports are bootable For port multiplier function, please follow Windows 8 instructions in Download's tab. Not a Hardware RAID controller. Supports 3TB and 4TB hard drives.

Features

Brand: IO Crest   |   Manufacturer: Syba

Item Dimensions: 1.6 x 5.9 x 6.8 inches (4.1 x 15.0 x 17.3 cm)   |   Package Dimensions: 1.6 x 5.9 x 6.8 inches (4.1 x 15.0 x 17.3 cm)

Amazon Price: $29.99 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 24 hours
List Price: $29.99

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  #5

SIIG Legacy and Beyond Series 2 Port (Dual) Serial / RS-232 PCIe Card with 16C550 UART

Model: LB-S00014-S1   |    Mpn: LB-S00014-S1   |    Ean: 0662774040110   |    PartNumber: LB-S00014-S1   |   Asin: B01N33BY23

SIIG s Dual-Serial Port / RS-232 PCIe Card is designed to add two 9-pin RS-232 serial ports to your PCI Express enabled desktop computer. This dual port serial PCIe adapter card features 256-byte FIFO buffer to support fast data transferring to ensure optimal performance in multitasking environment. This is a high performance adapter card to add two RS-232 serial ports for connecting additional serial-based devices such as a POS system, industrial testing and control device, security system, logistic management equipment and more.

Package Contents:
Dual-Serial Port / RS-232 PCIe Card
Driver CD
Installation guide

Features

  • Quickly adds two serial ports through an available PCI Express slot
  • Supports serial port data transfer rates up to 115.2 Kbps, compatible with 16C550 UART
  • 256-byte depth FIFO buffer supports fast data transfer especially in a multitasking environment
  • Perfect solution to connect with POS system, industrial testing and control device, security system, logistic management equipment, etc.
  • Chipset: ASIX/MosChip MCS9900CV-AA
  • See more on Amazon...

Brand: SIIG   |   Manufacturer: SIIG

Item Dimensions: 0.79 x 4.72 x 3.07 inches (2.0 x 12.0 x 7.8 cm)   |   Package Dimensions: 1.3 x 5.51 x 7.4 inches (3.3 x 14.0 x 18.8 cm)

Amazon Price: $25.99 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 24 hours
List Price: $25.99

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  #6

Syba 2 Port DB9 RS-232 RS-422 RS-485 Serial PCI Card SD-PCI15039

Model: SD-PCI15039   |    Mpn: SD-PCI15039   |    Ean: 0810154013821   |    PartNumber: SD-PCI15039   |   Asin: B00GWAE3L4

The Syba SD-PCI15039 2 Port DB9 RS-232 Serial PCI Controller Card WCH351 Chipset can be installed in an available PCI slot to add two RS232 serial ports to your system. Using the latest chipset which supports Windows 8, this controller card is ideal for connecting to modem, cellular phone, PDA, ISDN terminal adapter, satellite receiver, graphic tablet, bar code scanner, label printer, automated teller machine, GPS, finger print identification, Infra-Red transceiver, packet radio, magnetic card reader, POS devices, multi-modem dial-up server, digital camera, automation interface, and card reader. Keeps old Serial devices alive.

Features

  • Supports Both Standard Profile and Low Profile Computer Chassis
  • Jumper Settings: (Voltage for Pin 1 and 9 of Each Serial DB9 Connector)CD/RI+5V+12V
  • Fully Compliant with PCI Local Bus Specification Revision 2.3
  • Supports Multiple Cards on One PC
  • Supports PCI Power management 1.2
  • Supports Both Standard Profile and Low Profile Computer Chassis
  • Fully Compliant with PCI Local Bus Specification Revision 2.3
  • Compatible to Industrial Standard 16C450, 16C550, 16C552 and Enhanced UART
  • See more on Amazon...

Brand: Syba   |   Manufacturer: Syba

Item Dimensions: 5.5 x 1.5 x 7 inches (14.0 x 3.8 x 17.8 cm)   |   Package Dimensions: 1.65 x 5.91 x 7.17 inches (4.2 x 15.0 x 18.2 cm)

Amazon Price: $10.13 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 24 hours
List Price: $19.98 | Used Price: $8.44

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  #7

USB to Serial Adapter - Prolific PL-2303 - COM Port Retention - USB to RS232 Adapter Cable - USB Serial

Model: ICUSB232PRO   |    Mpn: ICUSB232PRO   |    Ean: 5054484050629   |    PartNumber: ICUSB232PRO   |   Asin: B000HVHDJ8

The ICUSB232PRO 1 ft USB to RS232 Serial DB9 Adapter Cable with COM Retention offers a professional grade solution for connecting legacy or industrial RS232 serial devices to a laptop or desktop computer through USB - eliminating the expense of upgrading serial peripherals for compatibility.
A time-saving and convenient USB/Serial solution, the adapter retains assigned serial COM port values in nonvolatile memory, allowing the same values to automatically be assigned to the adapter serial port if disconnected and reconnected, or disconnected from one USB port and installed in another.
A versatile connectivity solution that bridges legacy serial peripheral devices with newer USB-capable computers, the USB to Serial adapter offers broad operating system compatibility including Windows , Linux and Mac OS, for easy integration into mixed environments. Backed by a StarTech.com 2-year warranty and free lifetime technical support.

Features

  • Add an RS-232 serial port to your laptop or desktop computer through USB; features COM port retention
  • USB to Serial
  • USB to RS232
  • Easy plug and play installation with our USB Powered adapter
  • Supports data transfer rates of up to 920kpbs
  • See more on Amazon...

Brand: StarTech   |   Manufacturer: STARTECH.COM

Item Dimensions: 0.57 x 1.5 x 8.27 inches (1.4 x 3.8 x 21.0 cm)   |   Package Dimensions: 1.26 x 5.59 x 6.85 inches (3.2 x 14.2 x 17.4 cm)

Amazon Price: $17.26 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 24 hours
List Price: $18.00

Warranty: 2 year warranty

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  #8

USB to RS422 / USB to RS485 Serial Port Converter Adapter Cable with FTDI Chip. Supports Windows 10, 8, 7, XP, Mac, SCM(Singlechip), Arduino, RRI and Android, etc.

Model: CQR05019US   |    Mpn: CQR05019US   |    PartNumber: CQR05019US   |   Asin: B079M8ZDN6

With the continuous development of the PC industry, USB interface is substituting the old industrial and low speed PC interface, but there are so much important equipment still use the RS485/RS422 interface in the industrial environment. So many users have to use the USB to RS485/RS422 converter to realize the data transfer between PC and RS485/RS422 equipment.
Wiki: http://www.cqrobot.wiki/index.php/USB_to_RS422/RS485-CQR05019

SPECIFICATION

- Standards: Compliant with USB 2.0, downward compatibility, and standard RS422, RS485.
- USB signal: VCC, DATA+, DATA-, GND
- RS422 signal: T/R+, T/R-, RXD+, RXD, GND
- RS485 signal: T/R+, T/R, GND
- Working mode: asynchronous working, point-to-point or point-to-more, full duplex 4-line, half duplex 2-line.
- Directional control: Using data flow automatic control technology, automatic control and data transmission criterion.
- Band Rate: 300-921600bps, automatically detects serial signal rate.
- load capacity: support to more each converter allows connecting 32 RS422 interface RS485 or equipment.
- Transmission range: 1200meter of RS422/485, 5m of USB cable.
- Interface Protection: 600W surge protection, Plus/Minus 15KV Esd protection.
- Interface: USB A Male, DB9 Male.
- signal indication: red for power, green for data sending, yellow for data receiving.
- Transmission media: twisted-pair or shielded wire.
- Transmission rate: 921600bps at 300M, 38400bps at 600M, 9600bps at - 1.2KM.
- Size: 1.2M length, convertor 66 mm * 39 mm * 20 mm.
- Operating environment: -25 Degree Celsius to 70 Degree Celsius, relative humidity at 5% to 95%.
- Support Windows98 / Windows2000 / XP / Vista / Win7 / Win8 / Win10 / ME, Linux, MAC, Android, Arduino.

DISTRIBUTION LIST

1 * CD Driver
1 * DB9 to 5P Converter
1 * USB to RS422 / RS485 Converter

Features

  • Pro grade USB to RS485 / RS422 converter. It easily lets you connect any RS485 or RS422 device directly to your computer's USB port.
  • Ideal for industrial environments, the serial port converter provides 15KV ESD protection on all signal pins to protect costly and often sensitive control equipment against electrical damage.
  • It is designed with a high performance quality processor chip (FTDI Chipset) and conversion circuitry which makes this USB to RS485 converter one of the most reliable adapters on the market.
  • There are no IRQ & COM port conflicts, since the port do not require any additional IRQ, DMA, memory as resources on the system.
  • Plug-and-Play, No power supply needed. Supports Windows 10, 8, 7, XP, Mac, SCM(Singlechip), Arduino, RRI and Android, etc.
  • See more on Amazon...

Brand: CQRobot   |   Manufacturer: CQRobot

Package Dimensions: 1.26 x 4.65 x 4.96 inches (3.2 x 11.8 x 12.6 cm)

Amazon Price: $15.87 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 2-3 business days
List Price: $15.87

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  #9

AIKE DB9 9-pin Female Adapter RS-232 Serial Port Interface Breakout Board Connector 5Pcs

 Ean: 0704270434403   |    PartNumber: 4335229057   |   Asin: B076D7HN77

9 signal name, serial number clearly marked, the board sides are marked Female DB9 with Screwlock / Jack screws for mounting the adaptor board to a wall box or panel that has a DB9 cut-out These adapter boards can be mounted directly to the equipment without using extension cables. Hole diameter: 33mm Size: 38mm x 30mm x 14mm Package included: 5 x DB9 9-pin Female RS-232 Breakout Board Connector

Features

  • Screw terminal for all 9 pins
  • Anti-oxidation, better contacts
  • Simple and quick connections installation.
  • Female DB9 connector with Screwlocks / Jack Screws
  • Used for experimentation or prototype work with RS-232 serial ports, I/O cards, and any other device that uses a DB9 connector.
  • See more on Amazon...

Brand: AIKE   |   Manufacturer: AIKE

Package Dimensions: 0.71 x 3.9 x 5.71 inches (1.8 x 9.9 x 14.5 cm)

Amazon Price: $16.99 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 24 hours
List Price: $16.99

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  #10

StarTech.com 4 Port RS232 PCI Express Serial Card w/ Breakout Cable

Model: PEX4S553B   |    Mpn: PEX4S553B   |    Ean: 0078667290195   |    PartNumber: PEX4S553B   |   Asin: B004WKTBHW

The PEX4S553B 4-Port PCI Express Serial Card (with breakout cable) lets you add 4 RS232 serial ports using a single PCIe expansion slot, with an included 1-to-4 cable enabling you to add 4 serial ports to a single low profile slot. The serial card features a native single-chip design that provides optimum reliability and speed, reducing the CPU load by up to 48% over conventional bridge-chip serial cards - a cost-effective solution for connecting legacy serial devices to PCIe-enabled computers. The multi-port serial adapter includes both full profile and low profile/half-height brackets for compatibility with standard and small form factor computers, and is compatible with a broad range of operating systems, including Windows, Linux, and MAC OS. This product is a replacement for our PEX4S552B card. Backed by a StarTech.com lifetime warranty and free lifetime technical support.

Features

  • Add 4 RS232 serial ports to any PC using a single PCI Express expansion slot
  • RS232 Card
  • PCI Serial Card Adapter
  • Includes both standard and low profile/half-height brackets, which makes this the perfect card for any application, including small form factor embedded applications
  • Includes a full profile and low profile/half-height bracket
  • See more on Amazon...

Brand: StarTech   |   Manufacturer: STARTECH.COM

Item Dimensions: 2.7 x 0.47 x 3.17 inches (6.9 x 1.2 x 8.1 cm)   |   Package Dimensions: 1.65 x 5.71 x 7.01 inches (4.2 x 14.5 x 17.8 cm)

Amazon Price: $69.97 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 24 hours
List Price: $79.78 | Used Price: $62.34

Warranty: Lifetime warranty

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  #11

Best Compute M.2 PCIe SSD to PCIe 3.0 x4 and M.2 SATA SSD to SATA III Adapter Card

Model: LYSB01E8A6SLC-ELECTRNCS   |    Mpn: LYSB01E8A6SLC-ELECTRNCS   |    Ean: 0762137320924   |    PartNumber: LYSB01E8A6SLC-ELECTRNCS   |   Asin: B01E8A6SLC

Use the Best Compute M.2 PCIe SSD to PCIe 3.0 x4 and M.2 SATA SSD to SATA III Adapter Card on your computer to take advantage of the latest generation of fast M.2 PCIe SSDs. Supports one M.2 PCIe (NVMe or AHCI) SSD and a second M.2 SATA 6Gbps SSD simultaneously. Supports M.2 form factor 2230, 2242, 2260 and 2280. Converts one M.2 (M Key) interface to PCIe 3.0 x4 interface (PCIe 2.0 Compatible). Converts one M.2 (B Key) interface to SATA 6Gbps interface (SATA connection required). No drivers required. Booting possible from M.2 NVMe SSD with compatible motherboards and supported BIOS. Intel 9 series and above chipset motherboards support booting from PCIe. Low profile bracket, SATA Cable and complete tool kit included for an effortless install. 1 Year Warranty. Support through our exclusive member community forum. Warranty valid only on products sold by Best Compute. Best Compute does not have any other authorized resellers. This is an Amazon listed product. Please Note: For installing the adapter card an empty PCIe 3.0 or 2.0 spec X4 slot should be available free in the motherboard. For installing SATA M.2 SSD, an empty SATA port should be available in the motherboard and the provided SATA cable should be used to connect the card to the motherboard SATA ports. Booting from PCIe SSDs depends on specific motherboard model, BIOS version and the Operating System used.

Features

  • Supports one M.2 PCIe (NVMe or AHCI) SSD and a second M.2 SATA 6Gbps SSD simultaneously. Supports M.2 form factors 2230, 2242, 2260 and 2280.
  • Converts one M.2 (M Key) interface to PCIe 3.0 x4 interface (PCIe 2.0 Compatible). Converts one M.2 (B Key) interface to SATA 6Gbps interface (SATA connection required). No drivers required. Booting possible from M.2 NVMe SSD with compatible motherboards with supported BIOS. Intel 9 series and above chipset motherboards support booting from PCIe. This adapter card is a passive device so OS and System compatibility solely depends on SSD model used.
  • Low profile bracket, SATA Cable and complete tool kit included for an effortless install
  • Please Note: For installing the adapter card an empty PCIe 3.0 or 2.0 spec X4 slot should be available free in the motherboard. For installing SATA M.2 SSD, an empty SATA port should be available in the motherboard and the provided SATA cable should be used to connect the card to the motherboard SATA ports. Booting from PCIe SSDs depends on specific motherboard model, BIOS version and the Operating System used. Please check system and OS compatibility with the SSD model.
  • 1 Year Warranty. User manuals, help documents and support available through our exclusive member community portal. Warranty valid only on products sold by Best Compute. Best Compute does not have any other authorized resellers. This is an Amazon listed product.
  • See more on Amazon...

Brand: Best Compute   |   Manufacturer: Best Compute

Item Dimensions: 1.5 x 5.5 x 5.5 inches (3.8 x 14.0 x 14.0 cm)   |   Package Dimensions: 0.8 x 5.3 x 5.4 inches (2.0 x 13.5 x 13.7 cm)

Amazon Price: $19.99 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 24 hours
List Price: $19.99

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  #12

SparkFun FTDI Basic Breakout - 3.3V

 Ean: 0799430213394   |    PartNumber: DEV-09873A   |   Asin: B004G52QR0

This is the newest revision of our FTDI Basic. We now use a SMD 6-pin header on the bottom, which makes it smaller and more compact. Functionality has remained the same. This is a basic breakout board for the FTDI FT232RL USB to serial IC. The pinout of this board matches the FTDI cable to work with official Arduino and cloned 3.3V Arduino boards. It can also be used for general serial applications. The major difference with this board is that it brings out the DTR pin as opposed to the RTS pin of the FTDI cable. The DTR pin allows an Arduino target to auto-reset when a new Sketch is downloaded. This is a really nice feature to have and allows a sketch to be downloaded without having to hit the reset button. This board will auto reset any Arduino board that has the reset pin brought out to a 6-pin connector. The pins labeled BLK and GRN correspond to the colored wires on the FTDI cable. The black wire on the FTDI cable is GND, green is DTR. Use these BLK and GRN pins to align the FTDI basic board with your Arduino target.

There are pros and cons to the FTDI Cable vs the FTDI Basic. This board has TX and RX LEDs that allow you to actually see serial traffic on the LEDs to verify if the board is working, but this board requires a Mini-B cable. The FTDI Cable is well protected against the elements, but is large and cannot be embedded into a project as easily. The FTDI Basic uses DTR to cause a hardware reset where the FTDI cable uses the RTS signal.

This board was designed to decrease the cost of Arduino development and increase ease of use (the auto-reset feature rocks!). Our Arduino Pro and LilyPad boards use this type of connector.

Features

Brand: SparkFun   |   Manufacturer: Sparkfun

Item Dimensions: 0.13 x 1 x 2 inches (0.3 x 2.5 x 5.1 cm)   |   Package Dimensions: 0.2 x 4.5 x 5.8 inches (0.5 x 11.4 x 14.7 cm)

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  #13

SilverStone Technology Universal PCI-Express x16 Gen 3.0 Flexible Riser Cable 220mm with EMI Shielding (SST-RC04B-400)

Model: SST-RC04B-400   |    Mpn: SST-RC04B-400   |    Ean: 0844761016456   |    PartNumber: SST-RC04B-400   |   Asin: B07JXTK19W

RC04 is a high-quality PCIe x 16 Flexible riser Ribbon cable developed primarily for the PIO chassis by Silverstone. This cable will enable the PIO based chassis to also be compatible with Mini-ITX builds that require installation of PCI Express expansion or graphics cards. In addition, it can be used for any other chassis or applications in which an extension is required for PCI Express cards.

Features

  • High-quality ribbon cable allows Graphics card Installation in any direction
  • Compatible with cards up to PCI Express x16 Gen 3.0
  • High Performance EMI shielding with flexible ribbon design
  • 400mm in length
  • RC04 can be bended up to a maximum of 5 sections at any One time
  • See more on Amazon...

Brand: SilverStone Technology   |   Manufacturer: Silverstone

Item Dimensions: 0.47 x 4.41 x 17.95 inches (1.2 x 11.2 x 45.6 cm)   |   Package Dimensions: 1.5 x 6 x 16 inches (3.8 x 15.2 x 40.6 cm)

First Available: 2018-10-01

Amazon Price: $64.99 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 24 hours
List Price: $64.99

Warranty: 1 Year Parts and Labor

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  #14

4 Port FXO Card with Low Profile for 2U Server,Supports FreePbx Issabel Asterisk PCI-E Card FXO tdm410 tdm410e tdm400e PCIe PCI Express Interface

Model: tdm400p-e   |    Mpn: tdm400p-e   |    Ean: 0601308620602   |    PartNumber: tdm400p-e   |   Asin: B00ZOW9T4C


The card is with 4 FXO modules installed.
Supports Freepbx,Issabel ,Trixbox...
with Low profile for 2U server
PCI Express (PCI-E) Connector


--The FXO module is in red and the FXS module is in green.
--FXO port connects to PSTN line and the FXS port connects to the telephone.


The Analog card supports Trixbox,Issabel ,FreePBX...
Using the analog card, open source VoIP PBX and stand alone PC, users can create their SOHO telephony solution include all the sophisticated features of traditional PBX, and extend features such as voicemail in IP PBX.

Issabel / Freepbx / Trixbox Settings:

[ .localdomain]#dahdi_genconf
[ .localdomain]#dahdi_cfg -vvvv

Configuration
======================
Channel map:
Channel 01: FXS Kewlstart (Default) (Echo Canceler: mg2) (Slaves: 01)
Channel 02: FXS Kewlstart (Default) (Echo Canceler: mg2) (Slaves: 02)
Channel 03: FXS Kewlstart (Default) (Echo Canceler: mg2) (Slaves: 03)
Channel 04: FXS Kewlstart (Default) (Echo Canceler: mg2) (Slaves: 04)
======================


--------------------------
AsteriskStore is supplying with FXS FXO Cards,SIP Phones and VoIP PBX.
Storefront >>
www.amazon.com/shops/asteriskstore

Features

  • Card Supports Freepbx Issabel Elastix 4,Trixbox...
  • with Low profile for 2U server
  • asterisk card tdm410 aex410 with 4 Port FXO Card
  • PCI Express (PCI-E) Connector
  • Using the card, open source software and PC,you can build a telephone solution / IP PBX / call center /SIP server/VoIP Gateway Trunk appliance based on the card easily at a very low cost.
  • See more on Amazon...

Brand: AsteriskStore   |   Manufacturer: AsteriskStore

Amazon Price: $174.00 | as of 01/16/2019(12:06am pst)
Availibility:
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  #15

StarTech.com 1 Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART - ExpressCard 54 Serial Card

Model: EC1S952   |    Mpn: EC1S952   |    Ean: 0854587079993   |    PartNumber: EC1S952   |   Asin: B002LITGA4

The EC1S952 1 Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART lets you add an RS232 serial port to your laptop or ExpressCard-equipped desktop computer. The serial ExpressCard is designed based on a single-chip architecture (as opposed to cards that use a ""bridge chip""), providing native PCI Express communication for greater performance and reliability by reducing the CPU load by up to 48%, and lowering power consumption. An included stabilizer bracket allows the EC1S952 to fit snugly in both 34mm and 54mm ExpressCard slots. Providing optimal communication with RS232 serial devices, this ExpressCard serial card supports baud rates of up to 115.2Kbps and features a 128-byte FIFO buffer, plus a high performance 16C950 UART. Backed by a StarTech.com lifetime warranty and free lifetime technical support.

Features

  • Add a high-speed RS-232 Serial port to your laptop computer via an ExpressCard expansion slot
  • Expresscard Serial Card
  • RS232 Card
  • Compatible with both 34mm and 54mm ExpressCard slots; includes a slot spacer for greater security while installed in 54mm slots
  • Single chip design optimizes speed, reliability and power
  • See more on Amazon...

Brand: StarTech   |   Manufacturer: STARTECH.COM

Item Dimensions: 5.91 x 1.73 x 8.43 inches (15.0 x 4.4 x 21.4 cm)   |   Package Dimensions: 1.57 x 5.83 x 8.27 inches (4.0 x 14.8 x 21.0 cm)

Amazon Price: $42.39 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 24 hours
List Price: $47.41 | Used Price: $43.99

Warranty: Lifetime warranty

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  #16

Ableconn PCI4S-954 4 Port RS232 PCI Serial Adapter Card with Power Output and 16950 UART (OXuPCI954 Chipset) - Optional 5V DC Output on Pin9 of DB9

Model: PCI4S-954   |    Mpn: PCI4S-954   |    PartNumber: PCI4S-954   |   Asin: B0177GBU1W

The Ableconn PCI4S-954 adds 4 RS232 Serial Ports each with 128 byte deep FIFO at Low Profile PCI card to your PC System. It supports 5V DC power in each Pin9 of DB9 connector, which makes it an ideal solution for many RS232-powered serial applications scuh as POS, bank teller systems, ATM, kiosks, and automated machines for cash drawers, receip printers, card swipers/readers, scales, bar code scanners, label printers, etc.

Specification
* Built with PLX/Oxford OXuPCI954 chipset which enables high performance 16C950 UART and is 6C550, 16C650, 16C750 and 16C850 backward compatible.
* Fan-out cable design which helps avoid cluttered connections
* Includes both low profile and regular size PCI brackets
* 3.3V operation Universal PCI card supports installation into 3.3 or 5V PCI slots. Compliant with PCI specifications revision 3.0 and PCI Power Management Specification 1.1
* Support 5V DC output in each Pin9 of DB9 connectors (total 2A5V DC supply from the card) for POS or other RS232-powered applications. The 5V DC output can be individually enabled/disabled in each DB9 Port.
* Jumper Selection:
- 4 x jumpers for setting Ring or 5V out in each Pin9 of DB9 connector
* 128-byte deep FIFO per transmitter and receiver
* 128 Tx interrupt thresholds and 128 Rx interrupt thresholds
* Supports data transfer rate up to 230 Kbps on each port
* CE, FCC, and Fully RoHS compliant
* Made in Taiwan

Package Contents
* Ableconn PEX4S-954 4-Port RS232 Serial PCI Card
* 1x low profile PCI bracket
* 1x Quad-RS232 fan-out cable
* 1x Driver CD

Features

  • Support 5V DC output in each Pin9 of DB9 connectors (total 2A5V DC supply from the card) for POS or other RS232-powered applications. The 5V DC output can be individually enabled/disabled for each DB9 Port.
  • Built with PLX/Oxford OXuPCI954 chipset which enables high performance 16C950 UART and is 6C550, 16C650, 16C750 and 16C850 backward compatible.
  • Includes both low profile and regular size PCI brackets. Fan-out cable design which helps avoid cluttered connections
  • Four 16C950 High performance UART DB9M channels with 128-byte deep FIFO per transmitter and receiver.
  • CE, FCC, and Fully RoHS compliant. Made in Taiwan.
  • See more on Amazon...

Brand: Ableconn   |   Manufacturer: Ableconn

Item Dimensions: 0.8 x 2.5 x 5 inches (2.0 x 6.4 x 12.7 cm)   |   Package Dimensions: 1.8 x 6.3 x 8.6 inches (4.6 x 16.0 x 21.8 cm)

Amazon Price: $74.99 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 1-2 business days
List Price: $74.99

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  #17

HP Smart Array P222/512 FBWC 6Gb 1-Port Internal/1-Port External SAS Controller 631667-B21

Model: 631667-B21   |    Mpn: 631667-B21   |    Ean: 4948382764232   |    PartNumber: 631667-B21   |   Asin: B007LBJGY2

The HP Smart Array P222 Controller is a low profile, 6 Gb/s, PCIe 3.0, Serial Attached SCSI (SAS) RAID controller that provides entry-level, second generation storage performance, scalability, and data protection for select HP ProLiant Gen8 rack servers and tower servers.

Features

  • It features four internal and four external SAS ports and delivers increased server uptime by providing advanced storage functionality, including online RAID level migration with flash back write cache, global online spare, and pre-failure warning.
  • Data compatibility between HP Smart Array Controllers means customers can easily upgrade to future Smart Array Controllers.
  • HP Smart Array Advanced Pack 2.0 firmware makes it easier for customers to protect their data with advanced functionality for this next generation of Smart Array controllers, including features such as RAID 1 ADM
  • See more on Amazon...

Brand: HP   |   Manufacturer: hp

Item Dimensions: 2 x 8 x 9 inches (5.1 x 20.3 x 22.9 cm)   |   Package Dimensions: 2.4 x 8.5 x 9.8 inches (6.1 x 21.6 x 24.9 cm)

Amazon Price: $142.31 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 1-2 business days
List Price: $142.31 | Used Price: $42.55

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  #18

Syba 1 Port DB25 Parallel PCIe x1 Controller Card Components Other SI-PEX10010 Green

Model: SI-PEX10010   |    Mpn: SI-PEX10010   |    Ean: 0810154013838   |    PartNumber: SI-PEX10010   |   Asin: B00GX9HYWE

Based on WCH382l chipset, the Syba SI-PEX10010 1 port DB25 parallel PCI-E X1 controller card adds a legacy parallel port to computer for external peripheral device such as printer, and industrial automation applications, which keeps old printer running.

Features

  • Fully compliant with PCI Express base Specification, Revision 1.0A
  • PCIe multi function peripheral controller with x1 Lane interface
  • Supports D1, D2, D3hot and D3cold
  • Utilizes 100-MHz Differential PCI Express common reference Clock
  • Form Factor: Low-profile
  • See more on Amazon...

Brand: Syba   |   Manufacturer: Syba

Item Dimensions: 1.2 x 4.4 x 5.6 inches (3.0 x 11.2 x 14.2 cm)   |   Package Dimensions: 1.6 x 5.7 x 6.9 inches (4.1 x 14.5 x 17.5 cm)

Amazon Price: $14.82 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 24 hours
List Price: $24.99 | Used Price: $9.99

Warranty: One year warranty

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  #19

Raspberry Pi HAT - 32 I/O Port Expander - MCP23017 - I2C - Black

Model: HAT32IOPE   |    Mpn: HAT32IOPEB   |    Ean: 0648260628239   |    PartNumber: HAT32IOPEB   |   Asin: B01MYD2QTP

The Raspberry PI HAT - 32 I/O Ports Expander (HAT32IOPE) board is a 32 Input/Output digital expansion board designed for use on the Raspberry Pi A+, Raspberry Pi B+, Raspberry Pi 2 Model B, and Raspberry Pi 3 Model B. The board use two Microchip MCP23017 16-bit I/O expander, allowing you to connect up to 32 digital inputs or outputs to the Raspberry Pi. The HAT32IOPE is connected to Raspberry Pi using a 20x2 GPIO connector with extended pins that allow you to stack many extension boards in a single Raspberry Pi. You can select the I2C address using the on-board 3bits switches (ON=0 the pin is grounded, OFF=1 the pin is pull up to 5V). The MCP23017 supports up to 8 different I2C: Due to there are two MCP23017 per board you are allowed to stack up to four HAT32IOPE boards on a single Raspberry Pi for a maximum of 128 I/O ports. The right angle headers allow you to connect the I/Os while the boards are stacked. The HAT32IOPE may be powered thru a 5V input polarized male connector (now on a right angle connector, female cable to connect external supply included) or thru the Raspberry Pi GPIO 5V pins. If you use the first option you can power the Raspberry Pi shorting the "Back PWR" jumper or isolate the Pi and HAT32IOPE keeping it open. In order to power the HAT32IOPE thru the Raspberry Pi GPIO 5V pins the "Back PWR" jumper must be shorted. Use of an external supply is recommended when you connect more than one HAT32IOPE boards to your Raspberry Pi. Specifications: -Vdd (5V polarized input header without BACK PWR): 4.5V - 5.5V -All digital inputs and outputs: 0 - Vdd -Maximum current on a single I/O Pin (sourced or sunk): 25 mA -Maximum current on each MCP23017 chip: 125 mA

Features

  • 32 Digital Inputs/Outputs, based on the Microchip MCP23017 chip
  • Control via the Raspberry Pi I2C port, selectable I2C addresses thru switches
  • Stackable, up to 4 boards per Raspberry Pi, right angled headers for ease connection when stacked
  • All I/Os are 5V tolerant, built in 3.3V to 5V shifter for Raspberry Pi I2C port protection
  • Raspberry Pi can be Back Powered or isolated thru a jumper, The board can be powered thru the Raspberry Pi GPIO 5V pins, or thru a 5V polarized input header from an external supply
  • See more on Amazon...

Brand: Nation Electronics   |   Manufacturer: Nation Electronics Inc

Item Dimensions: 1.25 x 4.25 x 4.75 inches (3.2 x 10.8 x 12.1 cm)   |   Package Dimensions: 0.51 x 2.99 x 5 inches (1.3 x 7.6 x 12.7 cm)

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  #20

StarTech.com 2S1P PCI Serial Parallel Combo Card with 16550 UART - IEEE 1284 Card - Serial Parallel PCI - PCI Serial Adapter

Model: PCI2S1P   |    Mpn: PCI2S1P   |    Ean: 5054629038840   |    PartNumber: PCI2S1P   |   Asin: B0000510SW

The PCI2S1P PCI Serial/Parallel Combo Card turns a PCI slot into two external 16C550 serial ports and one external EPP/ECP parallel port - an all-in-one solution that gives you both parallel and serial connections while taking up only one PCI slot.

Suitable for installation in a small form factor computer, the PCI serial/parallel card includes an optional low profile/half-height mounting bracket that makes installation easy.

The serial/parallel combo card is PCI plug and play ready and supports IRQ sharing for fast, simple installation. The combo card is supported in virtually any Microsoft Windows operating environment (Windows 7, Server 2008 R2, Vista, XP, ME, 2000, 98, 95 and NT4), and is backed by a StarTech.com Lifetime Warranty and free lifetime technical support.

Features

  • Add a parallel port and two RS-232 serial ports to your PC through a PCI expansion slot
  • 2S1P PCI Serial Parallel Combo Card with 16550 UART
  • PCI RS232 Serial Card plus Parallel Port
  • 2x Serial and 1x Parallel Adapter Card / PCI Serial/Parallel Card Adapter / Serial RS232 Adapter Card with Parallel Port
  • All three ports share only one IRQ which minimizes the system resources required to operate the card
  • See more on Amazon...

Brand: StarTech   |   Manufacturer: STARTECH.COM

Item Dimensions: 5.71 x 1.57 x 8.27 inches (14.5 x 4.0 x 21.0 cm)   |   Package Dimensions: 1.6 x 5.7 x 8.6 inches (4.1 x 14.5 x 21.8 cm)

Amazon Price: $28.03 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 24 hours
List Price: $42.99

Warranty: Lifetime warranty

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  #21

Dual Port Serial Industrial DB9 COM RS232 PCIe X1 Card for Desktop PC with Low Bracket Moschip MCS9922

Model: SD-PEX15022   |    Mpn: SD-PEX15022   |    Ean: 0810154012930   |    PartNumber: SD-PEX15022   |   Asin: B003D3MFHM

Based on one of the best known serial chipset MCS9901 for best performance. Ideal for connecting to modem, cellular phone, PDA, ISDN terminal adapter, Satellite receiver, graphic tablet, bar Code scanner, label printer, automated teller machine, GPS, finger print identification, Infra-Red transceiver, packet radio, magnetic card reader, POS devices, multi-modem dial-up server, digital camera, automation interface, and card reader. Keeps old serial devices alive.

Features

  • Fully compliant with PCI-Express base Specification Revision 1.0A
  • Chipset: MCS9922
  • Included Low profile bracket
  • Compatible with industrial standard 16C550 UART
  • On chip 256-byte depth FIFO in transmit
  • Form Factor: Low-profile
  • See more on Amazon...

Brand: Syba   |   Manufacturer: Syba

Item Dimensions: 1.2 x 4.8 x 5.6 inches (3.0 x 12.2 x 14.2 cm)   |   Package Dimensions: 1.6 x 5.6 x 6.8 inches (4.1 x 14.2 x 17.3 cm)

First Available: 2014-12-11

Amazon Price: $18.35 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 24 hours
List Price: $20.48

Warranty: 3 Year Warranty

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  #22

Brainboxes XC-235 Serial Adapter

Model: XC-235   |    Mpn: XC-235   |    Ean: 8373240027130   |    PartNumber: XC-235   |   Asin: B00CL61UQY

Express Card providing one port RS232. Where absolute compatibility with classic desktop serial COM ports is a necessity. Guaranteed low latency, memory mapped, no compromise high performance interface. Up to 921,600 data transfer rates and the 128 byte deep transmit and 128 byte receive FIFOS, coupled with 1Mbit/s line drivers deliver uncompromising performance on your laptop. Drivers for Windows 32 bit and 64 bit Operating Systems including Windows XP, Server 2003, Vista, Server 2008 and Windows 7.

Features

Brand: Brainboxes   |   Manufacturer: Brainboxes

Item Dimensions: 0.8 x 4 x 1.5 inches (2.0 x 10.2 x 3.8 cm)   |   Package Dimensions: 1.89 x 5.35 x 6.38 inches (4.8 x 13.6 x 16.2 cm)

First Available: 2018-11-15

Amazon Price: $102.44 | as of 01/16/2019(12:06am pst)
Availibility:
List Price:

Warranty: Limited lifetime warranty

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  #23

SIIG DP CyberSerial 4S PCIe

Model: JJ-E40011-S4   |    Mpn: JJ-E40011-S4   |    Ean: 0662774040226   |    PartNumber: JJ-E40011-S4   |   Asin: B078R13RWR

Adds four RS-232 serial ports to PCI Express enabled computer systems

Features

  • PCI Express 1-lane (x1) adapter works with PCI Express slots with different lane width
  • Installs in any available PCI Express slot
  • Four high-speed 16550 UART RS-232 serial ports (9-pin) support asynchronous baud rates up to 921Kbps
  • Works as standard RS-232 port or with 5V or 12V power output for devices that require power (such as handheld scanners, table scanners, POS displays, etc.).
  • Built-in 256-byte FIFO buffers dramatically increase data transmit/receive speed, especially under Windows multitasking environment
  • See more on Amazon...

Brand: SIIG   |   Manufacturer: SIIG

Item Dimensions: 2.6 x 6.6 x 9.5 inches (6.6 x 16.8 x 24.1 cm)   |   Package Dimensions: 2.6 x 6.6 x 9.6 inches (6.6 x 16.8 x 24.4 cm)

First Available: 2018-12-03

Amazon Price: $69.99 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 24 hours
List Price: $85.25

Warranty: NA

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  #24

Lenovo PM-154-001 1 Port Serial Adapter (Ruggedized) - 1 X 9-Pin Db-9 Male RS-422/485 Serial

Model: PM-154-001   |    Mpn: PM-154-001   |    Ean: 0837324001051   |    PartNumber: PM-154-001   |   Asin: B001DRNCFE

Pc card providing one RS422/485 serial port. Up to 921, 600 data transfer rates and the 128 byte deep transmit and 128 byte receive fifos, coupled with 1Mbit/s line drivers deliver uncompromising performance on your laptop/PC.

Features

  • Pc card providing one ruggedized RS422/485 Serial port.
  • Data transfer rates up to 921, 600 baud rates and the 128 byte deep transmit and 128 byte receive fifos,
  • Drivers for Windows 32 Bit and 64 Bit operating systems including Windows 95/98/2000, XP, server 2003, Vista, server 2008 and Windows 7
  • See more on Amazon...

Brand: Lenovo   |   Manufacturer: Lenovo

Item Dimensions: 9.5 x 3 x 7 inches (24.1 x 7.6 x 17.8 cm)   |   Package Dimensions: 1.6 x 5.9 x 5.9 inches (4.1 x 15.0 x 15.0 cm)

First Available: 2018-11-15

Amazon Price: $143.55 | as of 01/16/2019(12:06am pst)
Availibility: Usually ships in 24 hours
List Price: $143.55

Warranty: no warranty

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