20-pin Extended Interface RCA AUX-IN/OUT Cable With 4G SIM card slot For Android Head Unit Stereo

20-pin Extended Interface RCA AUX-IN/OUT Cable With 4G SIM card slot For Android Head Unit Stereo This is a replacement part. Only devices with built-in 3G/4G modules can use this adapter 20P Connector With 6-RCA Leading-out details: 2x AUX IN(1x AUX L IN+1xAUX R IN) 2x AUX OUT(1x AUX L OUT+1x AUX R OUT) 1x VIDEO OUT 1x VIDEO IN1 1x AMP Control Wire 1x SIM Slot