Bluetooth Driver (CastleNet, USI) is a software product for Windows developed by Lenovo Group
It is reported that the following Windows processes are part of Bluetooth Driver (CastleNet, USI):
If you want to remove Bluetooth Driver (CastleNet, USI) from your computer, just go to Start > Control Panel > Add/Remove programs and select Bluetooth Driver (CastleNet, USI) from the list of programs.