We have the drivers for the Realtek RTL8811CU Wireless Adapter below, these are compatible with most versions of Windows including Windows 11 to XP. The RTL8811CU chipset by Realtek is installed in many USB devices offering WiFi 802.11ac. Your device may look different to the image on this page, but if it has this chipset then these drivers may be needed. In some cases Windows may already have the drivers installed and if the device is working ok, then there is probably no need to update them unless the connection is slow or not reliable. If you are not sure what driver to use just go for the one at the top as it is the latest version.