This micro-channel expansion card allows an IBM PS/2 computer to be attached to an Ethernet network using either a BNC connector ('thinnet') or a Media Attachment Unit ('thicknet').

Identifying marks:

• 3Com EtherLink/MC
• (C) 1987 3Com MADE IN USA 4233-02 REV A
• NETWORK ADDRESS 02608C-864138
• Z55210 ELNK/MC
• FAB P/N 4245-01 REV A
• The rear of the PCB also has the designer's names included in the copper mask:
• Kap Sah
• Gary Wang
• Carol Sikes
• Pamela Black
• Richard Hausman
• Jack Moses
• Brian Petersen
• Henry Ohab
• Dennis Rivera
• David Schwartz
• Vafha Shay