StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe Serial DB9 Controller Card 16950 UART - Low Profile - Windows/Linux

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589 availableas of 09/19/2026

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Compliance, certifications and origin

  • EU RoHS
  • REACH
  • WEEE
  • RoHS
  • Origin: Taiwan
Rated excellent by our customers Read our reviews

Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

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Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

Overview

About the StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe Serial DB9 Controller Card 16950 UART - Low Profile - Windows/Linux

View user manual

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 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

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

More from the manufacturer

Technical specifications

Technical Specifications of the StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe Serial DB9 Controller Card 16950 UART - Low Profile - Windows/Linux

General Information

General Information specifications
Manufacturer StarTech.com
Manufacturer Part Number PEX1S953LP
Manufacturer Website Address http://www.startech.com
Brand Name StarTech.com
Product Name 1-Port PCI Express Serial Card with 16950 UART - Low-Profile
Packaged Quantity 1
Product Type Serial Adapter

Technical Information

Technical Information specifications
Host Interface PCI Express x1
UART Type 16950
Platform Supported LinuxPC

Interfaces/Ports

Interfaces/Ports specifications
Number of Serial Ports (External) 1

Physical Characteristics

Physical Characteristics specifications
Form Factor Plug-in Card
Card Height Low-profile
Height 5.9"
Width 2.6"
Length 3.9"
Weight (Approximate) 1.60 oz

Miscellaneous

Miscellaneous specifications
Package Contents
  • 1-Port PCI Express Serial Card with 16950 UART - Low-Profile
  • 1 x Full-Profile Bracket
  • 1 x User Manual
Green Compliant Yes
Green Compliance Certificate / Authority EU RoHS
Environmental Compliance Registration, Evaluation, Authorization and Restriction of Chemicals (REACH)Waste Electrical and Electronic Equipment Directive (WEEE)Restriction of Hazardous Substances (RoHS) 2
Country of Origin Taiwan
End of Life Manual Availability Yes
EU RoHS Declaration URL https://media.startech.com/cms/pdfs/pex1s953lp_rohs.pdf
REACH Declaration URL https://media.startech.com/cms/pdfs/pex1s953lp_rohs.pdf
REACH free of SVHC Yes
WEEE Statement https://media.startech.com/cms/pdfs/pex1s953lp_weee.pdf

Warranty

Warranty specifications
Limited Warranty Lifetime

Ratings and reviews

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