2-port PCI Express RS232 Serial Adapter Card - PCIe to Dual Serial DB9 RS-232 Controller - 16950 UART - Windows and Linux PEX2S953

StarTech.comSKU: PEX2S953
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Sale price$109.99


General Information

Manufacturer Part Number: PEX2S953
Manufacturer Website Address:
Brand Name:
Product Name: 2-Port PCI Express RS232 Serial Adapter Card - 16950 UART
Marketing Information:

This multiport PCI Express RS232 serial adapter card lets you add two RS232 (DB9) serial ports to your computer through a PCI Express (PCIe) slot, as if they were native serial ports. The dual port PCIe serial card enables you to interact with serial devices, such as card readers, printers, PIN pads, and modems, at speeds of up to 921.6Kbps.

Maximum Compatibility

With broad OS support, including for Windows and Linux, this 2 port PCI E serial card is easy to integrate into mixed environments. The card comes pre-configured with a full-profile bracket, and includes optional low-profile brackets, so installation is easy regardless of the case form factor. This card is a direct replacement for PEX2S952 .

Experience Optimal Technology

This PCIe to serial adapter supports the following features:

  • Industry standard 16950 UART compatible
  • Supports max baud rate of up-to 921.6Kbps
  • Provides 5/12V power output on Pin 9 when external power is connected
  • 256-byte depth FIFO cache per transmitter and receiver
  • Supports 9, 8, 7, 6, 5 data bits (one per port)
  • Asix AX99100 chipset
  • Base PCI Express 1.1 compliant
  • Low and full-profile brackets included

The Choice of IT Pros Since 1985 conducts thorough compatibility and performance testing on all our products to ensure we are meeting or exceeding industry standards and providing high-quality products to IT Professionals. Our local Technical Advisors have broad product expertise and work directly with our Engineers to provide support for our customers both pre and post-sales.

PEX2S953 is backed by a lifetime warranty and free lifetime technical support.

More from the Manufacturer

Packaged Quantity: 1
Product Type: Serial Adapter

Technical Information

Host Interface: PCI Express 1.1 x1
UART Type: 16950
Platform Supported: PC,Linux


Number of Serial Ports (External): 2

Physical Characteristics

Form Factor: Plug-in Card
Card Height: Low-profile
Height: 0.60" (15.24 mm)
Width: 2.50" (63.50 mm)
Length: 3" (76.20 mm)


Package Contents:
  • 2-Port PCI Express RS232 Serial Adapter Card - 16950 UART
  • 1 x Low Profile Bracket
  • 1 x Quick Start Guide

Environmentally Friendly: Yes
Environmental Compliance: Restriction of Hazardous Substances (RoHS),Registration, Evaluation, Authorization and Restriction of Chemicals (REACH),Waste Electrical and Electronic Equipment Directive (WEEE)
Country of Origin: Taiwan


Limited Warranty: Lifetime

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