Open Device Manager again. Expand . You should now see Realtek RTL8187L Wireless LAN Driver (without a yellow mark). Right-click it > Properties > General tab: "This device is working properly."
The Alfa AWUS036H is on Windows 11, but with community drivers you can still use it for basic Wi-Fi. For its original purpose — Wi-Fi auditing and long-range packet capture — you should pair it with a Linux VM or dual boot. alfa awus036h driver windows 11
However, you can still use this classic adapter on modern systems like Windows 11 and Windows 10 by using legacy drivers in . 1. Download the Correct Driver Open Device Manager again