Vintage Data Transfer Switch 4 Channel Computer Parallel Serial Control

Two (2) Vintage Data Transfer Switches 2Way Parallel PRINTER 25 Pin Port A B

4-port manual parallel data transfer switch (cross-over type) Retro Computing

Curtis A/B Data Transfer Switch Box With 3 Cables in Very Good Condition

2-to-1 D-Sub 9 Serial Port Data Transfer Switch 2-1 or 1-2 9pin DE-9 2way RS-232

Computer Printer 25 Pin Parallel Port Data Transfer A/B Switch Used Untested

PC31 Vintage Parallel Printer Cables - one new, 3 used

Vintage Connexions DB2525-2V Multiport 2 Way Data Switch (Serial) - RARE