: Right-click the Start button and select Device Manager .
lsusb | grep -i csr sudo systemctl start bluetooth bluetoothctl driver bluetooth m-tech bt-05
Bluetooth 4.0 offers several advantages over its predecessors (2.0 and 3.0): lower power consumption, extended range (up to roughly 50 meters in open air), and improved data rates (up to 24 Mbps). However, the BT-05 does not support newer versions like Bluetooth 5.0 or 5.3, meaning it cannot leverage features such as longer range (up to 240 meters) or higher bandwidth for multiple devices simultaneously. For the typical user looking to connect a basic headset or mouse to a Windows 7 or 8 machine, however, the BT-05’s specifications remain sufficient. : Right-click the Start button and select Device Manager
: Press Win + R , type services.msc , and ensure "Bluetooth Support Service" is set to Running and Automatic . For the typical user looking to connect a
Needed only for older 2012-era CSR drivers.
After installation, reboot. The Bluetooth icon should appear in the system tray.