The most reliable source for these generic chips is the official Microsoft repository:

The challenge? Realtek stopped providing active updates for this chipset years ago. That means the does not come from the manufacturer directly but from Microsoft’s update catalog, community sources, or generic Realtek drivers.

The most reliable source for a Windows 11 compatible driver is the Microsoft Update Catalog Search for "Corechip" (a common alias for this hardware). Download the version listed for Windows 10/11 x64. In Device Manager, right-click your adapter → Update driver Browse my computer → select the folder where you unzipped the download. Microsoft Learn 3. Official Manufacturer Sources