This adapter converts the multi pin connector on the side of the GP320 or GP340 to the two pin version used on GP300, XTN etc. You can then use a wider variety of earpieces.

This is specialy indicated to use our headsets with GP300 two pins cable, and allow expand the compatibility to the next radios:

GP140, GP320, GP328, GP329, GP338, GP339, GP340, GP360, GP380, GP640, GP680, GP1280

HT750 , HT1250 , HT1550

PRO5150, PRP5350, PRO5450, PRO5550, PRO7150, PRO7350, PRO7450, PRO7550, PRO7750, PRO9150

PTX Series 

 

Note this adapter will not fit the GP344