abcGoodefg&reg; COM port Programming Cable for Motorola two way radio GP328 GP338 GP340 GP360 GP680 HT1250 MTX1500 PRO5150 PTX760 Aftermarket Interface Cable. Connected PC Interface: COM Port Radio Connector : For Motorola GP328 (4pins) Model Number: RPC-M328-1 Used to connect your radio and PC,then write the program setting and frequency of the radio by PC