ASUS USB-BT500 Bluetooth 5.0 Nano USB Adapter Wireless Connection, Free of limitation USB-BT500 is a Bluetooth Smart Ready USB adapter with new Bluetooth 5 capabilities. USB-BT500 enables wireless connectivity with a wide range of devices such as computers, printers, phones, headsets, speakers, keyboards, controllers, and more. Instant Bluetooth Upgrade – 2X Faster and 4X Wider Slot ASUS USB-BT500 into your PC for an instant upgrade to the latest Bluetooth 5.0 technology and enjoy up to 2X-faster transmit speeds and 4X-greater range. Enabling Bluetooth on your PC lets you enjoy the convenience and freedom of wireless connectivity with a wide range of devices, including speakers, headphones and game controllers. Power Saving and Backward Compatibility The ultra-small USB-BT500 comes with Bluetooth Low Energy (BLE) technology, which lets you enjoy energy-saving connectivity. In dual mode, USB-BT500 maintains full backward compatibility with Bluetooth 4.x, 3.x, and 2.1.