Radio Shack 25 Pin Manual Parallel Shielded Serial Data Switch

Vintage Data Transfer Switch 4 Channel Computer Parallel Serial Control

NCR Clone of IBM 6135932 8 bit ISA BUS Serial Parallel Interface Card XT Era

Kouwell KW-524E ISA Serial Parallel Multi I/O Controller Card w/ Dual DB Connect

Genuine Vintage AST I/O Mini II DB-9 Serial / DB-25 Parallel Port 8-Bit ISA Card

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

Retro ISA multifunction card (serial, parallel, floppy and hdd controller)

NEW VINTAGE WISELAND 8 BIT ISA I/O CARD WITH 2 SERIAL PARALLEL GAME RM00-MSBX13