Bluetooth 5.0 USB adapter for connecting music and games. - Bluetooth Version: Bluetooth 5.0 - Supported OS: Windows 7/8/8.1/10 - Class: CLASS 1 - Interface: USB 1.1/2.0/3.0 - Chipset: Realtek RTL8761B - Functions: Music playback, gaming, keyboard, printer connection I purchased this but have kept it stored unused. Please forgive any oversights as this is a personal inspection and the item has been stored at home. Thank you for looking.