An IEEE-488 Serial Interface.

Extremely difficult to get your hands on. This is proof that they do exist.

None!

Specifications:

ERA:	1982
CPU:	n/a
RAM:	n/a
DRIVES:	n/a
MONITOR:	n/a
AUDIO:	n/a
I/O:	1 x IEEE-488 Interface 1 x RS-232 Interface (DB25)
Keyboard

TNW-2000 Serial Interface