Intel

Intel PRO/100+ Management Adapter, PCI Ethernet NIC, 721383-007

Bottom line: The Intel PRO/100+ Management Adapter is a specs-and-price decision rather than a crowd-consensus one in the retro networking cards category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

Live pricing on eBay

As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →

🛒 Search current eBay listings Compare to similar retro networking cards

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-03

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. About the author →

Before you buy

Check the listed dimensions, connectors and platform compatibility against your setup before ordering
Used and vintage listings vary by seller and condition — check the listing photos, description and return terms before buying

Manufacturer description

The Intel PRO/100+ Management Adapter, PCI Ethernet NIC, 721383-007 is a 10/100 Ethernet twisted pair card with a 1/3 length PCI form factor. It has one port and a maximum data rate of 100 Mbps. This network card is compatible with universal brands and PCI ports, making it suitable for various computer systems. The card features an RJ-45 external interface and is designed for high-speed networking capabilities. With the trusted Intel brand and reliable performance, this Ethernet NIC is a great addition to enhance your computer's networking capabilities.

SpecPicks Verdict

SpecPicks scored Intel PRO/100+ Management Adapter using a rating × review-volume × price-fit model applied to published specs and reviews across the retro networking cards category. Intel's retro 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 retro 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 retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Full Specifications

type	Management
speed	10/100

Hardware benchmark data

Ready to buy?

Intel PRO/100+ Management Adapter, PCI Ethernet NIC, 721383-007 is vintage hardware; the used and vintage market on eBay carries most of the live inventory. 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.

See live eBay listings →