This is a spare Plantronics Bluetooth USB adapter for the Plantronics Bluetooth wireless products. This part #85117-01 is intended for usage with the Microsoft version of the Plantronics Bluetooth products.
The Plantronics BT300-M Bluetooth USB Adapter is considered an "accessory" by Plantronics and is not covered under there warranty.
Global Teck Offers a 30 day satisfaction guarantee on all Plantronics accessories including the Plantronics Spare BT300-M Bluetooth USB Adapter, 85117-01.