If you have a generic USB Wi-Fi adapter with no brand name, you likely need the MediaTek (formerly Ralink) RT2870 or RT5370 chipset drivers. These are widely available as "Generic 802.11n" drivers and work for about 80% of unbranded Wi-Fi dongles. Step-by-Step Installation Guide
However, because many 802.11n adapters are older or integrated into various laptop models (HP, Dell, Acer, Lenovo), Windows sometimes fails to identify the specific manufacturer (Realtek, Broadcom, or Atheros) automatically. This is where a manual becomes necessary. How to Identify Your Wireless Card 802.11 N Driver Download -FREE- Jasvendra Parmar
Before installing any new driver, type "Create a restore point" in your Windows search bar and set one. This allows you to undo changes if the driver causes a Blue Screen (BSOD). How to Install a Driver Manually (.inf files) If your download doesn't have an "Easy Setup" exe: Go to Device Manager . If you have a generic USB Wi-Fi adapter
Jasvendra Parmar provides a comprehensive guide for downloading and installing the 802.11n Wireless USB Adapter driver —specifically for the Model No: OT-WUA950NM —on his blog and through his YouTube channel, Kuchh Naya Sikhen This is where a manual becomes necessary
Are you experiencing a specific or is the 802.11n adapter not appearing in your Device Manager?