"You'll find the Cables To Go's line of IEEE-1284 manual switch boxes are perfect for sharing an IEEE-1284 parallel printer. These switch boxes feature a heavy-duty, easy-to-turn rotary switch enclosed in a metal case with rubber feet to protect your desk or table top. The rugged metal case is designed to withstand the rigors of everyday use and helps prevent unwanted EMI/RFI interference. Each connector is wired straight-thru in a pin-to-pin configuration to ensure compatibility. Features: Type: 4 computers to 1 printer. Input/Output Connectors: Five DB25 Females. Application: Used for sharing an IEEE-1284 parallel printer. Rugged metal case is helps prevent unwanted EMI/RFI interference."