... THE "INPUT 1, 2 , 3 ," CONNECTORS WHEN YOUR TV TO THE "OUTPUT" CONNECTORS .CONVENIENT OPERATION, JUST PULL THE SWITCH TO THE RELATIVE "OUTPUT 1, 2, 3 ... ," WHEN YOU WANT TO USE ONE OF THE THREE CONNECTED VIDEO DEVICES.WITH 3 RCA ... CABLE FOR YOUR CONNECTION BETWEEN TV AND THE SWITCH. AV 3 WAY RCA ...