1.Audio adapter 2.Original:PMLN4455 3.For EX500,EX600,GL2000,GP328PLUS, GP338Plus,GP344,GP388,PRO5150ELITE 4.To Visar PMLN4455 Audio AdapterFor EX500,EX600,GL2000,GP328PLUS,GP338Plus,GP344,GP388,PRO5150ELITETransfer to Visar series,Transfer to GP300 series Audio Adapter for Motorola EX500,600,GL2000,GP328PLUS,GP338Plus,GP344,GP388,PRO5150ELITE