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StarTech 1-Port PCI Express 10/100 Ethernet Network Card (PEX100S) | Low… competes with other Networking Cards products on SpecPicks. Use our Compare tool to view specs side-by-side, or browse the full Networking Cards category for alternatives.

StarTech.com

StarTech 1-Port PCI Express 10/100 Ethernet Network Card (PEX100S) | Low Profile Network Card, Interface Adapter

Name: StarTech 1-Port PCI Express 10/100 Ethernet Network Card (PEX100S) | Low Profile Network Card, Interface Adapter
Brand: StarTech.com
SKU: B00186YI9Y
Price: 25.99 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-21

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$25.99

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*Price sourced from Amazon.com. Last updated 2026-04-19. Price and availability subject to change.

Bottom line: The StarTech 1-Port PCI Express 10/100 Ethernet Network Card (PEX100S) | Low Profile Network Card, Interface Adapter is a specs-and-price decision rather than a crowd-consensus one in the networking cards category, priced around $25.99. Check the specification table above against one or two close alternatives — on price and spec fit, not on star ratings.

Pros & Cons

Pros

✓ Add a 10/100Mbps Ethernet port to a desktop computer through a PCI Express slot
✓ Backed by StarTech.com's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

This PCI Express based 10/100 Ethernet Card provides a simple way to connect a PCIe enabled server or workstation to a 10/100 Ethernet network and offers a broad range of features and functions, including support for both Full and Half Duplex operation as well as Wake On LAN (WOL) Power Management. The PEX100S Ethernet Card includes both standard and low profile brackets and is compatible with most mATX (Slimline) and ATX system form factors, and features Auto MDI/MDIX automatic configuration, which helps to simplify installation and configuration.

SpecPicks Verdict

SpecPicks scored StarTech 1-Port PCI Express 10/100 Ethernet Network Card (PEX100S) |… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the networking cards category. StarTech.com's networking 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 networking 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 Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Key Features

Add a 10/100Mbps Ethernet port to a desktop computer through a PCI Express slot
Compatible with PCI-E equipped computers and RJ-45 ethernet equippment
PCIe Ethernet Card / PCI express ethernet NCI / 10/100 adapter card
Cost effective and simple Ethernet networking for a desktop computer systems
Compliant with IEEE802.3 CSMA/CD, 802.3 10Base-T and 100Base-TX standards

Full Specifications

Brand	StarTech.com
Color	Black
Unit Count	1.0 Count
Model Number	PEX100S
Mfr Part Number	PEX100S
Number of Packs	1
Compatible Devices	Desktop
Data Link Protocol	IEEE 802.3
Data Transfer Rate	100 Megabits Per Second
Hardware Interface	Ethernet

Ready to buy?

StarTech 1-Port PCI Express 10/100 Ethernet Network Card (PEX100S) | Low Profile Network Card, Interface Adapter is sold on the used and vintage market, where eBay carries the live inventory — Amazon does not stock this part. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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*Price sourced from Amazon.com. Last updated 2026-04-19. Price and availability subject to change.