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StarTech.com 1 Port Low Profile PCI Express Serial Card - 16550 **

1 x 9-pin DB-9 Male RS-232 Serial PCI Express

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Web ID: 1017465363
Mfr. Part: PEX1S553LP
The PEX1S553LP PCI Express Serial Card turns a PCI Express slot into an RS232 (DB9) serial connection.

The card is constructed using a native single chip design that lets you harness the full capability offered by PCI Express (PCIe), while reducing the load applied to the CPU by as much as 48% over conventional bridge chip serial cards.

The PCI Express RS232 Serial Adapter Card is compatible with a broad range of operating systems, including Windows® 2000/XP/2003/Vista™/Windows 7/Server 2008 R2 (32 and 64 bit), Linux Kernel 2.6.11 to 4.11.x, and ships with a low profile/half-height bracket installed, but includes an optional full profile bracket that lets you add a serial port to virtually any computer (regardless of the case form factor).

This product is a replacement for our PEX1S552LP card.

Backed by a StarTech.com Lifetime warranty and free lifetime technical support.

** Unless defective, this product is final sale once the packaging has been opened.

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General Information
Manufacturer Part Number:
Manufacturer Website Address:
Brand Name:
Product Model:
Product Name:
1 Port Low Profile PCI Express Serial Card - 16550
Product Type:
Serial Adapter
Technical Information
Host Interface:
PCI Express
Data Transfer Rate:
3.59 Mbit/s
UART Type:
Platform Supported:
Number of Serial Ports (External):
Physical Characteristics
Form Factor:
Plug-in Card
Card Height:
Package Contents:
  • 1 Port Low Profile PCI Express Serial Card - 16550
  • Full Profile Bracket
Additional Information:
  • Native single-Chip, single lane PCI Express; 48% less cpu load, and increased performance.
  • Pre-configured for low profile/half-height systems but includes a full profile bracket for versatility.
  • Easy to install and use with full step-by-step instructions saving time and hassle.
  • Windows® 10 (32/64), 8 / 8.1 (32/64), 7 (32/64), Vista (32/64), XP (32/64), XP Embedded, POS Ready 2009, Embedded System 2009, CE 5.0/6.0, 2000, 98SE, 95, DOS
  • Windows Server® 2012, 2008 R2, 2003
  • Mac OS® 10.4 and later (tested up to 10.10)
  • Linux kernel 2.6.x
  • Environmentally Friendly:
    Environmental Certification:
    Limited Warranty:
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