Many generic 5.0 dongles use Realtek chips. Verified packages for 32-bit Windows 7 are available through manufacturer support pages like Lenovo (Version 1.3.887.3009 or similar) .
If your computer doesn't automatically detect the dongle, follow these manual steps: Intel® Wireless Bluetooth® for Windows 7* bluetooth usb dongle 50 driver windows 7 32bit verified
: Go to Device Manager > Right-click Unknown Device > Properties > Details > Hardware IDs . Search that string (e.g., USB\VID_0BDA&PID_8771 ) to find the exact manufacturer. Many generic 5
If the automatic installer fails, follow this verified manual method: How to fix Windows error code 43 - ManageEngine bluetooth usb dongle 50 driver windows 7 32bit verified