These devices are almost universally based on chipsets from Realtek or Ralink (now MediaTek). They are popular because they are incredibly cheap to manufacture. However, because they are generic, they are often sold without a specific brand or model number. The device usually presents itself to the computer simply as "Wireless N Adapter" or "802.11n NIC."
Before downloading, you must know which chipset (the internal processor) your adapter uses. Most generic 802.11n USB dongles use chips from MediaTek (Ralink) Wireless LAN 802.11n USB2.0 Network Adapter - DriverHub usb 2.0 wireless 802.11 n driver download
If your chip is not supported by default, compile from GitHub: These devices are almost universally based on chipsets
Write down the (Vendor ID) and PID (Product ID). This is the most reliable way to find your driver. because they are generic