The Plugable Bluetooth USB Dual Mode 4.0 Low Energy Micro Adapter is a black adapter designed to be used with a PC. It features Bluetooth v4.0 technology and operates in dual mode, allowing for connectivity via both Bluetooth and USB 2.0 ports. With a portable design, this unit is easy to use and provides a reliable connection for your devices. Manufactured by Plugable, this adapter is a convenient and efficient solution for enhancing your computer's connectivity options.