OEM MOTOROLA HEADSET ADAPTER Micro-2.5mm RAZR2 V8 V9 Q9m Your Micro USB/ Motorola Q9h/ RAZR2 V8/ RAZR2 V9/ RAZR2 V9m cell phone requires a 2.5 mm audio adapter for a standard \\\"universal\\\" Hands free headset to work. NOT compatible with LG or Samsung phones! Motorola SYN2112/ SYN2112A Hands free audio adapter is the Micro USB to 2.5 mm audio jack adapter piece only, and not the Hands free headset. Microphone pass through: allows your headset\\\\\\\'s microphone to handle calls. Adjust the audio directly from the cell phone. Note: Not compatible with adjustable microphone volume type headsets.