OEM Motorola 2.5mm Headset Adapter lets you use a standard 2.5mm hands-free
headset with Motorola phones that use a mini USB headset jack. Motorola part no.
SYN1505. Please note, this adapter does not have a microphone so you would not
be able to talk on the phone with the adapter connected. If you receive a call
while the adapter is connected, unplug the adapter to take the call.