Manual Data Switch Box DB25 Female 4-port usually works for Parallel Printers or Serial RS232 Devices

Manual Switch Box
4-Way DB25 A/B/C/D Switch
DS-25DBF-M04

DB25 A/B/C/D 4-way Manual Switch Box, 4 to 1 Input/Output. Five DB25 Female connectors. Application: Used for sharing parallel or serial peripherals. Each connector is wired straight-through pin-to-pin configuration. Metal case helps prevent unwanted EMI/RFI interference.