The RT3090BC4 is a combo card providing both Wi-Fi and Bluetooth 3.0. You may need two separate drivers if Windows does not automatically install both: Wifi Driver Problem Ralink RT3090bc4 (SPS#602992-001)
To download the driver, it is recommended to use official repositories like the Microsoft Update Catalog or the support site of your laptop manufacturer (e.g., HP or Lenovo ). Since Ralink was acquired by MediaTek, official direct downloads from the original Ralink site are no longer available. Recommended Download Sources ralink rt3090bc4 draiver skachat
: This is the safest source for Windows 10/11 users. Search for "Ralink RT3090" to find the latest verified drivers. The RT3090BC4 is a combo card providing both