Vintage Data Transfer Switch 4 Channel Computer Parallel Serial Control

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

Vintage Radio Shack Parallel Port Data Switch Box Manual Selector DB25

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

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

Vintage new old stock Parallel Data transfer switch

Vintage DB25 A/B/C/D Parallel Serial Manual Data Switch Box

CP35 - Vintage 2-Port Data Transfer Switch Box A/B Selector