GC Electronics DATA SWITCH BOX, RS-232,DB-25, A/B/C/D 45-2005

DB25 A⁄B⁄C⁄D⁄E Switch Type, 3 Ports, Metal Casing, Complies with IEEE 1284 Standard, Data Switches
A/B/C/D Data Switch: Data switches permit computer users to share printers, modems, etc., providing economy by decreasing the amount of equipment needed. All GC data switches are data-transparent and all lines are switched “straight-through”. This permits using an A/B switch to a printer with two computers, or using two printers with one computer, and so forth. Built using sturdy steel cases, for durability and shielding, and sealed to protect the precious metal contacts. One I/O DB-25 female to four DB-25 females.
All pins are wired through switch.