Common for older 802.11n dongles. Search for "MediaTek 802.11n USB driver".
You almost always need to compile the driver from source or install it via DKMS. usb 2.0 wireless 802.11 n driver download
Step 1: Hardware Identification The most common mistake is searching for the model number printed on the plastic casing of the adapter. This is often misleading. The correct method is to plug the device into the computer, open , locate the device (usually under "Other Devices" or "Network Adapters" with a yellow warning triangle), right-click it, and select Properties . Under the "Details" tab, selecting "Hardware IDs" from the property dropdown will reveal a string of code (e.g., USB\VID_0BDA&PID_8176 ). These specific IDs can be cross-referenced with database websites like pcilookup.com or simply entered into a search engine to find the exact chipset manufacturer (e.g., Realtek or Ralink). Common for older 802