STARTECH 

PEX2S1P553B StarTech.com 2S1P PCI Express Serial Parallel Combo Card

Mfg Part Number:  PEX2S1P553B  
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Price: $74.99 + Free Shipping
Quantity:
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Last Updated: Nov 11, 2025
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The PEX2S1P553B 2S1P PCI Express Serial Parallel Combo Card with Breakout Cable combines the functionality of Parallel and Serial cards, adding 2 RS232 serial ports and 1 parallel port through a single PCI Express (PCIe) slot.

Suitable for almost any computer, the card offers a low profile/half-height design and includes an optional full-height bracket. The included break-out cable uses a single connector on the card to deliver 3 ports, avoiding crowded connections that can occur with fixed/static ports. Compatible with a broad range of operating systems including DOS, Windows® 7/Server 2008 R2/Vista/XP/Server 2003/2000/98SE (32/64 bit), Linux and Mac OS X.

The card also features a native single-chip design that provides improved speed and reliability while reducing the CPU load by as much as 48% over conventional (bridge chip) cards.

This product is a replacement for our PEX2S1P552B card.

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

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Main Specification
General Information
Manufacturer StarTech.com
Manufacturer Part Number PEX2S1P553B
Manufacturer Website Address http://www.startech.com
Brand Name StarTech.com
Product Name 2S1P PCI Express Serial Parallel Combo Card with Breakout Cable
Packaged Quantity 1
Product Type Serial/Parallel Combo Adapter
Technical Information
Host Interface PCI Express x1
Data Transfer Rate 250kB/s Serial Port
Data Transfer Rate 1.5MB/s Parallel Port
UART Type 16C550
UART Type 16C450
Parallel Port Modes ECP
Parallel Port Modes SPP
Parallel Port Modes EPP
Platform Supported Mac
Platform Supported PC
Interfaces/Ports
Number of Parallel Ports (External) 1
Number of Serial Ports (External) 2
Physical Characteristics
Form Factor Plug-in Card
Card Height Low-profile
Height 3.1"
Width 0.9"
Length 3.7"
Weight (Approximate) 7.90 oz
Miscellaneous
Package Contents
  • 2S1P PCI Express Serial Parallel Combo Card with Breakout Cable
  • 1 x Full Profile Bracket
  • 1 x Driver CD
  • 1 x Instruction Manual
Environmentally Friendly Yes
Environmental Compliance Waste Electrical and Electronic Equipment Directive (WEEE)
Environmental Compliance Restriction of Hazardous Substances (RoHS)
Environmental Compliance Registration, Evaluation, Authorization and Restriction of Chemicals (REACH)
Country of Origin China
TAA Compliant Yes
Warranty
Limited Warranty Lifetime
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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