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

StarTech 2S1P PCI Express Serial Parallel Combo Card (PEX2S1P553B)

Bottom line: The StarTech.com StarTech 2S1P PCI Express Serial Parallel Combo Card is a specs-and-price decision rather than a crowd-consensus one in the expansion cards category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ PCI Express Serial Parallel Card
  • ✓ Backed by StarTech.com's warranty and support channels

Cons

  • ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
  • ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

Manufacturer description

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…

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SpecPicks Verdict

SpecPicks scored StarTech.com StarTech 2S1P PCI Express Serial Parallel Combo Card using a rating × review-volume × price-fit model applied to published specs and reviews across the expansion cards category. StarTech.com's expansion cards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for expansion cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • Add a parallel port and two RS-232 serial ports to your PC through a PCI-Express expansion slot
  • PCI Express Serial Parallel Card
  • PCIe Serial Parallel Combo Card Adapter
  • 2 Port Serial and 1 Port Parallel
  • Comes with Breakout Cable

Full Specifications

BrandStarTech.com
StylePCI Express w Breakout Cable
Style NamePCI Express w Breakout Cable
Unit Count1 count
Model NumberPEX2S1P553B
CompatibilityPC
Mfr Part NumberPEX2S1P553B
Number of Items1
Number of Packs1
Compatible DevicesComputers, Printers, Peripherals
Hardware InterfacePCI
Warranty DescriptionLifetime warranty
Item Dimensions L x W x H3.7"L x 3.1"W x 0.9"H
Global Trade Identification Number00065030842426

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StarTech 2S1P PCI Express Serial Parallel Combo Card (PEX2S1P553B) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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StarTech 2S1P PCI Express Serial Parallel Combo Card (PEX2S1P553B)
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