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

Vintage Data Transfer Switch 4 Channel Computer Parallel Serial Control

Cardco Centronics Parallel Printer Interface for VIC-20 & C-64 UNTESTED

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

Vintage new old stock Parallel Data transfer switch

Vintage Parallel Port Printer A/B SWITCH 25 PIN

Data Transfer Switch 2 Way Vintage Parallel Printer 25 Pin Port with Two Cables

Vintage Belkin F1B024E 2-Port DB25 Data Transfer Switch with one cord– Untested