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StarTech PCI to PCI Express Adapter Card, Low Profile, TAA (PCI1PEX1) | PCIe x1 (5V) to PCI (5V & 3.3V) slot adapter
StarTech.com

StarTech.com StarTech PCI to PCI Express Adapter Card

Bottom line: The StarTech.com StarTech PCI to PCI Express Adapter Card ($46.53 on Amazon as of 2026-10-06): Converts a standard 32-bit PCI slot into a working low-profile PCIe x1 slot; main trade-off: accepts PCIe x1 cards only; no x4, x8, or x16 GPUs supported.

$46.53

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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.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Converts a standard 32-bit PCI slot into a working low-profile PCIe x1 slot
  • ✓ Ships with both low-profile and full-size brackets for desktop or server cases
  • ✓ Bracket design secures the PCIe card's own low-profile bracket in the slot
  • ✓ Lets PCI-only motherboards run modern PCIe x1 expansion cards
  • ✓ Half-height form factor suits tight server and small-form-factor builds

Cons

  • ✗ Accepts PCIe x1 cards only; no x4, x8, or x16 GPUs supported
  • ✗ Throughput bottlenecked by the host 32-bit PCI bus, not native PCIe speed
  • ✗ Requires low-profile/half-height cards; full-height PCIe cards won't fit
  • ✗ Compatibility varies by card and BIOS, so it is not guaranteed universal

Manufacturer description

The PCI1PEX1 PCI to PCI Express Adapter card lets you use low profile PCIe expansion cards in a server/desktop motherboard PCI slot. The adapter connects through a 32-bit PCI slot to provide a low profile PCIe x1 slot in its place; a spare, full size bracket is included for installation in larger desktop or server expansion slots that can accommodate a full-sized card.The PCI to PCI Express Adapter features an innovative bracket design that adapts and secures the low profile PCI Express card into the converted slot, ensuring a versatile and economical solution for extending the usability of…

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SpecPicks Verdict

SpecPicks scored StarTech.com StarTech PCI to PCI Express Adapter 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

  • Install half-height/low profile x1 PCI Express interface cards in a standard PCI expansion slot
  • PCI to PCI Express Adapter Card
  • PCI to PCIe Adapter Card
  • Use low profile PCIe expansion cards in a server/desktop motherboard PCI slot
  • Innovative bracket design adapts and secures the existing low profile/half-height bracket of the PCI Card

Full Specifications

BrandStarTech.com
StylePCI to PCI Express
Style NamePCI to PCI Express
Unit Count1.0 Count
Model NumberPCI1PEX1
Built-In MediaStarTech PCI to PCI Express Adapter Card
Mfr Part NumberPCI1PEX1
Compatible DevicesDesktop
Hardware InterfacePCI
Warranty Description1 year warranty
Global Trade Identification Number00065030837835
Full listing titleStarTech PCI to PCI Express Adapter Card, Low Profile, TAA (PCI1PEX1) | PCIe x1 (5V) to PCI (5V & 3.3V) slot adapter

Ready to buy?

StarTech PCI to PCI Express Adapter Card, Low Profile, TAA (PCI1PEX1) | PCIe x1 (5V) to PCI (5V & 3.3V) slot adapter 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.

Buy on Amazon — $46.53

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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StarTech PCI to PCI Express Adapter Card, Low Profile, TAA (PCI1PEX1) | PCIe x1 (5V) to PCI (5V & 3.3V) slot adapter
$46.53
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