Introduced in 1988, the 3Com 3C523 brought high-performance Ethernet to IBM’s PS/2 Micro Channel systems. Supporting both AUI and BNC connections, it could be used with thick Ethernet, thin Ethernet or external transceivers, making it suitable for a wide range of network installations. At a time when networking was becoming essential in business, the 3C523 reflected 3Com’s reputation for reliability and broad compatibility, and became one of the most common Ethernet adapters for MCA-equipped PCs and servers.

Details

Manufacturer	3Com
Model	Etherlink/MC
Year	1989
Condition	Working
Source	Facebook Marketplace
Acquired	2026-05-15
Installed in	RH-TJ8E
Reference	https://www.ardent-tool.com/NIC/3c523.html

Specs

Chip	Intel P82586-6
Interface	MCA
Connector	AUI, BNC

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History

2026-07-29	flagged a photo as a reference image
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2026-07-26	created