If you have a small USB dongle labeled "BT52," this is a Bluetooth 4.0 Adapter. It does not require a specific "mouse driver" in the traditional sense. Instead, it requires a Bluetooth driver to allow your computer to talk to the device.
Before we dig into troubleshooting, we need to address the most common source of confusion: Bluetooth 5.2. bt52 mouse driver
Modern wireless technology has advanced rapidly. The current standard for high-performance mice is Bluetooth 5.2 (often abbreviated as BT 5.2). If you have a small USB dongle labeled
If you are looking for a "BT52 driver" because you just bought a new, high-end mouse, you are likely actually looking for Bluetooth 5.2 compatibility drivers. The PS/2 mouse uses a bidirectional synchronous serial
If you are searching for this driver because your modern mouse is lagging or disconnecting, the issue is almost certainly your PC's Bluetooth adapter, not the mouse itself.
The "BT52" you need is a firmware update for your system.
The PS/2 mouse uses a bidirectional synchronous serial protocol: