Four PC share one VGA/SXGA monitor/projector or one PC connects to four video devices. This video switch has built-in 5-Pin DIN connector for sharing devices like AT Keyboard or MIDI but usage is optional. It is guaranteed up to 10,000 switching cycles, has SureGrip with suction to provide stability during switching, metal case, heavy duty sealed rotary switch to prevent dust and moisture, gold-plated contacts and 5 Year Warranty. (Connectors: 5 HD15/Din5 Female)