Select the Advanced tab, then look for the LMP (Link Manager Protocol) listing in the Firmware or Firmware version area. Right-click (or long-press) on the Bluetooth radio listing (yours might simply be listed as a wireless device) and then select Properties. Select the arrow next to Bluetooth to expand it. In the Search box on the taskbar, type device manager, then select Device Manager from the list of results. To see which Bluetooth version is on your PC Bluetooth accessories sometimes require a minimum Bluetooth specification (version) in order to work with full functionality.