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Item#: N82E16815158113

StarTech 2 Port Native PCI Express RS232 Serial Adapter Card with 16950 UART

  • PCI Express to Serial Port Card
  • Data Transfer Rate Up to 460.8 Kbps
  • External Ports 2 x Serial Ports
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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Add high speed serial communications to your system with this dual profile card from StarTech. Since it has standard and low profile brackets you can use it in any PC with a PCIe x1 port. The single chip solution contains both the 16C950 UART and the PCIe controller for maximum communications efficiency.

A 4-pin Molex connector is included for devices that get their power from the serial port.

  • newegg Dual Serial Ports The StarTech PEX2S952 features dual 9-pin high-speed RS-232 serial ports to add serial capability directly to your computer for connections with various serial devices such as scales, touchscreens, magnetic card readers, bar code scanners, receipt printers and label printers in POS retail applications, bank teller workstations or ATMs.
  • newegg PCI Express Interface The PCI Express interface effectively quadruples the amount of available computing bandwidth for faster music downloads, smoother streaming video, and lightning-fast access to mass-storage devices.

Learn more about the STARTECH PEX2S952




PCI Express to Serial Port Card
External Ports
2 x Serial Ports
Data Transfer Rate
Up to 460.8 Kbps
Operating Systems Supported
Windows XP, Vista
Self service automated machines and kiosks to control serial devices such as scales, touchscreens, magnetic card readers, bar code scanners, receipt printers, label printers
POS retail applications in grocery stores, and any other retail store to control keyboards, cash drawers, receipt printers, card readers / card swipes, scales, and elevated displays on poles
Bank teller workstations in either full profile or low profile versions to control their serial devices such as cash drawers, card readers / card swipes, printers, keypads / pinpads, pen pads
Standard ATM automated teller machines to control keypads, receipt printer, card readers / card swipes, touchscreen LCD's, camera control, etc.
Used to control multiple surveillance / security cameras in a parking structure, office building, etc.
Any other serial or legacy devices
Chipset: Oxford OXPCIe952
Connector Types 2 - DB9 Male
Connector Types 1 - LP4 Male

Physical Spec

0.79" x 3.54" x 2.56"
2.05 oz.


128-byte deep FIFO per transmitter and receiver
Automated in-band software flow control using programmable Xon/Xoff in both directions
Automated out-of-band hardware flow control using Tx/Rx/RTS/CTS/DSR/DTR/DCD/RI/GND
Compliant with IEEE1284, SPP/EPP/ECP parallel port
Compliant with PCI Express base specifications revision 1.0a
High Performance Dual Channel Oxford 950 UART
Native single-Chip, single lane PCI Express
Selectable power output on pin 9 for the serial port
Two high speed RS-232 serial ports with data transfer rate up to 460.8 Kbps

Manufacturer Warranty

1 year limited
1 year limited

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the STARTECH PEX2S952

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  • Rob D.
  • 8/11/2010 2:13:58 PM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

4 out of 5 eggsGood Card - Win7-64 Drivers odd

Pros: Fast hardware-UART serial ports through PCIe 1x. Adjustable form factor plate and headers for 1U and 2U cases.

Cons: Expensive. Documentation could be better.

Other Thoughts: The driver disk autorun errors on execute. There is no setup utility, and no instructions on driver installation. Drivers from website fail to load properly. You need to manually install drivers from CD, then let Windows Update retrieve functional drivers.

Good card, poor documentation, buggy driver install, but fixable. 4/5 eggs.

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  • Anonymous
  • 6/12/2010 12:07:52 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsExtra serial ports

Pros: Works well, adds 2 serial ports via PCI-E interface card.

Cons: The second serial port didn't work out of the box. The problem: it's attached via ribbon cable and the connector was on upside down.

Other Thoughts: Using the product on Windows Server 2008. Not officially supported, but works just fine with the Vista drivers. Startech's support was very helpful, but a 1 egg deduction for the poor quality control.

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Computer Hardware > 
Computer Accessories > 
Add-On Cards > 
Item#: N82E16815158113
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