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Digiboard ISA 8 Bits Port Card.
Advanced Port Card for Asynchronous Terminal Connection, such as VT100/VT220 and others. It was used to add 'dumb' terminals to Unix, Xenix, and it's also compatible with various Linux systems, as well as DOS, OS/2, and Windows.
Bus Type: 8-bit ISA.
Manufactured: Digiboard.