Klein Brand top quality adaptor converts the Motorola 2-pin Connector to fit Motorola Mutli-pin radios: M1->M4
Audio Adaptor for Motorola Multi-pin to Dual Pin
K9716A - Klein Brand top quality adaptor converts the MotorolaDual Pin
Connector to fit Motorola Mutli-pin radios: M1 --> M4
Adapter works on these models:HT750,HT1250, HT1250LS, HT1550, HT1550XLS,
MTX850, MTX850LS, MTX8250, MTX8250LS, 850, 850LS, 9250, 950, 960,
GP140, GP320, GP328, GP329, GP338, GP 339, GP340, GP360, GP380, GP640, GP680, GP1280,PRO5150, 5350, 5450, 5550, 5750,
PRO7150, 7350, 7450, 7550, 7750, 9150 PTX700, 760, 780
Please visit HiTechWireless.com for more info.