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Item#: N82E16815158071

StarTech 2 Port PCI 16950 RS-232 Dual Voltage / Dual Profile Serial Card Model PCI2S950DV

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  • Dual Voltage ensures compatibility with both 3.3 and 5.0 volt PCI slots
  • Standard and low profile bracket included allowing installation into almost any system

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

When speed is of the essence with your serial port devices, try StarTech's 16950 UART card. The two DB9 connectors each capable of handling up to 460Kbps, twice that of the older 16550 based ports.

OS support for Win95 through Vista plus IRQ sharing and a plug and play interface make installation fast and easy.

  • newegg Two Serial Ports The StarTech PCI2S950DV features two 9-pin RS232 serial ports to add additional serial capability to your computer. Just connect your computer with serial port devices such as modems easily!
  • newegg PCI Interface The StarTech PCI2S950DV features a PCI interface compliant with Plug-n-Play. Simply install the card into your PC's free PCI slot without powering down the system!

Learn more about the STARTECH PCI2S950DV




PCI to Serial Port Card
External USB Ports
External Ports
2 x Serial Ports
Data Transfer Rate
Operating Systems Supported
Windows NT4, 95 / 98 / ME / 2000 / XP, and Linux
Note: Crystal will need to be adjusted to achieve 460 Kbps
Bus Type: PCI / PCI-X (5 / 3.3V)
Card Type: Standard Profile (LP bracket incl.)
Chipset ID: PLX/Oxford - OXuPCI952
Color: Green
Connector Type(s): PCI / PCI-X (Universal 3.3 & 5V ; 32-bit) Male
Data Bits: 5, 6, 7, 8, 9
External Ports: DB-9 (9 pin ; D-Sub) Male
FIFO: 128 Bytes
Flow Control: Hardware, Auto Xon/Xoff, None
Humidity: 5~85% RH
Included in Package: 2 Port PCI / PCI-X Serial Card
Driver CD
Instruction Manual
Low Profile Bracket
Interface: Serial
Max Baud Rate: 460.8 Kbps
Operating Temperature: -10°C to 80°C (14°F to 176°F)
OS Compatibility: Windows® 8 / 8.1 (32/64bit), 7 (32/64), Vista (32/64), XP (32/64), 2000, ME, 98SE, 95
Windows Server® 2012, 2008 R2, 2003
Linux 2.6.11 and up
Parity: None, Even, Odd
Port Style: Integrated on Card
Ports: 2
Product Height: 120 mm [4.7 in]
Product Length: 105 mm [4.1 in]
Product Weight: 55 g [1.9 oz]
Product Width: 20 mm [0.8 in]
Serial Protocol: RS-232
Shipping (Package) Weight: 0.2 kg [0.4 lb]
Storage Temperature: -20°C to 100°C (-4°F to 212°F)


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 RTS / CTS and/or DSR / DTR
Maximum data transfer rate of 460 Kbps
PCI 2.2 and PCI Power Management 1.0 compliant
Two high performance 16C950 UART channels
UART’s fully compatible with 16C550 type devices

Dimensions & Weight

0.35 lb
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Customer Reviews of the STARTECH PCI2S950DV

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  • Wendy M.
  • 3/5/2014 1:59:05 PM
  • Ownership: 1 day to 1 week

5 out of 5 eggsGreat for Linux

Pros: I bought this card because my old PCI 2S+1P card stopped working when I upgraded to Debian Linux 7.3.0. Most PCI serial cards use the NetMos chip, and that got broken in the new Linux kernel. This card uses the Oxford Semiconductor chip, which still works. Well worth the few extra dollars!

Cons: The card was autodetected ok, but one thing they don't tell you is that it uses a nonstandard baud rate generator, eight times the usual frequency. In Linux you need to specify "setserial /dev/ttyS1 baud_base 921600" to make the baud rate come out right. Also, if you're replacing a different card (like I was) you may need to use setserial to fix the port address or the IRQ number.

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  • Eviatar M.
  • 10/25/2012 5:34:43 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat choice

Pros: Easy to install. I am using Windows XP so i had to install the drivers from the CD too, was very easy. Working great!!!

Cons: None.

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  • Steven T.
  • 11/1/2009 9:32:37 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsgood card

Pros: This card works great and really needed it so I can practice my IOS commands on my router/switch for my Cisco classes in college, worked nicely with my system .

Cons: Took me awhile to find the proper drivers for this card I have a 64-bit OS of windows xp but I found them at leas,t as long as it works it it's all good.

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  • Anonymous
  • 9/22/2009 2:48:53 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsWorks great.

Pros: Purchased a couple of these for a client running touch screen Point of Sale (heh - Newegg filtered the acronym when I tried to use it) machines. Does require driver installation from CD but there were no issues - install the card first and then locate the driver on the disc. Does everything is says it will and has a sturdy build to it.

Cons: Did have an IRQ conflict (strangely enough) with one system but just turned off the onboard serial and it fixed itself.

Other Thoughts: Comes packaged nicely.

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Item#: N82E16815158071
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