The TP-LINK UB400 Bluetooth 4.0 Nano USB Adapter is a compact and lightweight device that allows you to easily connect your computer or laptop to Bluetooth-enabled devices such as smartphones, tablets, and speakers. With a sleek black color and USB connectivity, this adapter is perfect for on-the-go use. It features Bluetooth v2.0 standard, ensuring compatibility with a wide range of devices. This unit quantity is one, making it a convenient and versatile accessory for your tech-savvy lifestyle.