Version 5.1.22.0 is highly sought after because it addressed several critical issues found in earlier releases:
If your 802.11n card connects but drops out, check your settings: In Device Manager, right-click your Wireless LAN card. Go to Properties > Power Management .
If you have the "Full" driver package, follow these steps to ensure a clean install: 80211n usb wireless lan card driver version 51220 full
Right-click your current wireless card in Device Manager and select Uninstall device . Check the box for "Delete the driver software for this device."
Remove the USB dongle from your computer. Version 5
Improved recognition when swapping USB ports.
Before installing, ensure your device uses the Ralink or MediaTek chipset, as version 5.1.22.0 is most commonly associated with these. Right-click the button and select Device Manager . Expand Network Adapters . Look for "802.11n USB Wireless LAN Card." Step 2: Manual Installation (Recommended) Check the box for "Delete the driver software
Open the downloaded driver folder and run Setup.exe as an administrator. Restart: Once the installation finishes, restart your PC.