Check the listing for details. Poly - BT700 High Fidelity Bluetooth USB-A Adapter (Plantronics). Color: Black, Condition: Used, Made in China. Listed at 40.00 USD. The Poly BT700 High Fidelity Bluetooth USB-A Adapter by Plantronics is a sleek black device designed to provide high-quality Bluetooth connectivity to your PC. With its USB connector, this adapter allows for easy and secure connection to your computer for seamless wireless audio streaming. Made in China, this Bluetooth USB-A adapter is perfect for enhancing your home networking and connectivity experience with its reliable Bluetooth and USB connectivity options. Ideal for those looking for a top-notch audio solution for their PC setup.