OEM Micro USB Home Wall Travel Charger Power Adapter for Plantronics M20, Voyager Legend UC, BackBeat 903, Explorer 240, Discovery 975SE, 77043-03 Spare, CS530, Voyager PRO UC - B230, Voyager 510S Voyager, ML 10 Bluetooth Models. Check to see if your Plantronics Bluetooth Headset model has a micro USB charging port. Previous Plantronics models do not have micro USB charging ports.