Locate the downloaded .zip or .exe file. If it is a zip folder, extract it first. Right-click the setup file and select 3. Manual Update (If the .exe fails) If there is no executable file, follow these steps: In Device Manager, right-click the device. Select Update Driver > Browse my computer for drivers .
dahdi_hardware
This is the direct driver from Realtek for the RTL88x2BU chipset. hw417v12 driver link