
LG TV Programming Cable 6FTt DB9-Female to 3.5mm TRRS Connector Male
Serial Transfer Communication Devices to Program LG TVsTRRS 3.5 mm Jack.
DB9-F Serial Port.

Wiring Schematic
DB9-F TRRS Connector 3.5mm Signal Pin 1 Pin 2 Ring 1 Transmit Data Pin 3 Tip Recieve Data Pin 4 Ring 2 Pin 5 Sleeve Ground Pin 6 Pin 7 Pin 8 Pin 9 Shell Foil SheildLayout of TRRS.
TIP-RING1-RING2-SLEEVE