Available via the Lenovo Support portal for older IdeaPad models.

Use trusted repositories such as Driverscape or Softpedia for Windows 10/8/7. Extract: Extract the downloaded file. Install via Device Manager: Open Device Manager (right-click Start > Device Manager). Find the Ralink device under Network adapters .

. Users often search for this specific driver version when dealing with compatibility issues on Windows 10 or 11. HP Support Community Driver Availability & Compatibility Official Support

For 99% of driver purposes, you should search for the driver, not the full “BC4 V20A” string. The latter is only useful when identifying the card for hardware replacement or verifying antenna connectors (usually 1 or 2 IPEX/U.FL connectors).

: You can find drivers for Windows 7 through Windows 11 on sites like Drvhub [17] or DriverScape [12].