Right-click the Start menu and select Device Manager . Find the Network Adapter: Expand the Network adapters section. Look for " Realtek 8723DU Wireless LAN 802.11n USB NIC
Once you have the correct driver file, follow these steps to install it:
If your adapter is not working optimally (disconnections, slow speed): Right-click the Start menu and select Device Manager
The best driver enables 5GHz by default. If not:
If you downloaded a file from the Microsoft Catalog, choose "Browse my computer for drivers" and select the folder where you extracted the files. Troubleshooting Tips for Windows 11 If not: If you downloaded a file from
(Good for the price, but requires tinkering to work well on Windows 11).
Reduced Bluetooth functionality (since the 8723DU is a combo card). If you download an unsigned driver from a
If you download an unsigned driver from a Linux backport or community repository, Windows 11’s Secure Boot + Driver Signature Enforcement will block it. To bypass:
Realtek's driver versioning follows a predictable pattern that helps you identify the best version for your needs. The most common version numbers you'll encounter for the Realtek 8723DU include:
It's possible, though not likely. To prevent issues: check for driver updates in Device Manager after major Windows updates, and keep an installation file of your working driver on your hard drive for quick reinstallation if needed.