Right-click the zip folder → Extract All → Choose a destination like C:\Drivers\AU9540V2 .
Do NOT download from "driver-download.com" or similar pop-up sites. They often bundle malware. au-9540-v2 driver
If you have a generic device or the manufacturer’s link is broken, you can go to the source. Asmedia hosts drivers for their chipsets. Right-click the zip folder → Extract All →