According to the official A4Tech Driver Instructions , follow these steps: 4200N - 8-in-one software | DOWNLOAD - A4TECH

: Once installed, the driver awakens. It scans the USB ports, finds the wireless receiver, and initiates a digital "handshake" with the mouse. The Result

. While many modern mice are "plug-and-play," the RN-10D is a specific nano receiver that often requires the Pair ID Program to re-establish a connection with your hardware. What is the A4Tech RN-10D?

If Windows shows “Unknown device” (rare), force update the driver:

You can find the Pair ID Program on the official A4Tech Support page.