Mfr Part Number: USB-BT500Features:Standard: Bluetooth V5.0Bluetooth 5.0 for Faster, Further Coverage: Transfer data up to twice as fast as before, and with 4X the range in BLEWireless Connection, free of limitation: Enables wireless communication with Bluetooth-enabled devicesFull Compatibility: Backward compatible with Bluetooth 2.1/3.x/4.xPower Saving for Devices: Bluetooth Low Energy technology for energy-saving wireless connectivityUltra-small Design: Highly portable and easy to use.Interface: USBOther Features:Wireless Connection, Free of limitation: 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 PCE-AX58BT 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.