1.Mini din 4 pin is a common s-terminal.S terminal that is short for Video signal input/output interface.It can be used to converter computer or DVD player or other HD equipment output Video signal to the TV with RCA port.

2.Mini 4 PIN S-Video connector adopts the output design of brightness and chromaticity separation, which overcomes the interference between brightness and chromaticity when video program compound output and provides high definition output effect.

3.It is for S-Video convert to RCA composite singal.For example: connect the S-Video output of a laptop to the RCA composite video input of my TV.

4.MINI Din 4 Pin assignments:1 GND (Y),2 GND(C),3 Y (Luminance),4 C (Chrominance)

5.Note that the s-vedio terminal cannot transmit a sound signal.Therefore, a 3.5mm microphone plug and a pair of cable connection components for the red/white RCA audio input jacks to connect an analog audio connection from the computer's sound card is required.(Not sell it)