StarTech.com 1-Port PCI Express RS232 Serial Adapter Card - PCIe Serial DB9

StarTech.com PEX1S953LP

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Manufacturer Part#  PEX1S953LP

UPC Code: 065030881159

Provantage Code:  STRN05M

Condition:  Factory New

  • Product Type: Serial Adapter
  • Country of Origin: Taiwan
  • Limited Warranty: Lifetime
  • Form Factor: Plug-in Card
  • Host Interface: PCI Express x1
  • TAA Compliant: Yes

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StarTech.com PEX1S953LP Specifications

    1-Port PCI Express RS232 Serial Adapter Card - PCIe Serial DB9

At a Glance

    Rear View
    • 1 PORT SERIAL CARD: Serial controller card w/ 16950 UART based on ASIX AX99100, allows 1x DB9 port w/bi-directional RS232 speeds up to 921.6Kbps per port, available 256 byte FIFO buffer & 9th data bit; Upgraded version of our popular card PEX1S952LP
    • OPTIONAL CONFIGURABLE POWER: PCI Express RS232 serial adapter card provides choice of 12v, 5v, or none through pin 9 w/up to 2A total
    • STANDARD PROFILE & LOW PROFILE BRACKET: PCIe serial card comes w/ a low profile bracket pre-installed & 1x full profile bracket is incl for versatile install; Supports Windows XP and up & Linux
    • VERSATILE APPLICATIONS: For low/standard profile desktop/servers w/ uses in point of sale terminals, PLCs, control/automation in factories, scientific sensors, medical equipment, scanner, oscilloscope
    • STARTECH.COM ADVANTAGE: IT professionals choice for over 30 years; PCI-e RS232 Serial expansion card is backed for life by StarTech.com, incl. free 24/5 North America based multi-lingual tech support


    This RS232 Serial Adapter Card lets you add an RS232 DB9 serial port to your computer through a PCI Express (PCIe) slot. It enables you to interact with serial devices such as card readers, printers, PIN pads, and modems, at speeds of up-to 921.4Kbps.

    Maximum Compatibility

    With broad OS support, including for Windows and Linux, this PCI Express card is easy to integrate into mixed environments. The card comes pre-configured with a low-profile bracket, and includes an optional full-profile bracket, so installation is easy regardless of the case form factor.

    Experience Optimal Technology

    This PCIe to serial adapter supports the following features:

    • Compatible with industry standard 16950 UART
    • Supports max baud rate of up-to 921.4Kbps
    • Provides 5/12V power output on Pin 9 when external power is connected
    • 128-byte depth FIFO per transmitter and receiver
    • Supports 9, 8, 7, 6, 5 data bits
    • Asix AX99100 chipset
    • PCI Express 1.1 compliant

    PEX1S953LP is backed by a StarTech.com lifetime warranty and free lifetime technical support.

    More from the Manufacturer

Package Contents

    • 1-Port PCI Express Serial Card with 16950 UART - Low-Profile
    • 1 x Full-Profile Bracket
    • 1 x User Manual

Additional Product Images


Product Name1-Port PCI Express RS232 Serial Adapter Card - PCIe Serial DB9
Manufacturer Part NumberPEX1S953LP
Product TypeSerial Adapter
Number of Serial Ports (External)1
Form FactorPlug-in Card
Host InterfacePCI Express x1
Environmentally FriendlyYes
Card HeightLow-profile
Country of OriginTaiwan
Packaged Quantity1
Platform SupportedPC


Limited WarrantyLifetime
UART Type16950
Supplies/Accessories for StarTech.com PEX1S953LP

StarTech.com 6 ft Straight Through Serial Cable - DB9 F/F

Mfg Part# MXT100FF

StarTech.com 10 ft DB9 RS232 Serial Null Modem Cable F/M

Mfg Part# SCNM9FM

StarTech.com 6 ft Straight Through Serial Cable - DB9 M/F

Mfg Part# MXT100

Considering a Volume Purchase?
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Purchase a minimum of $3,000 of StarTech Products

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