This is the most requested procedure. Installing the on modern Windows requires disabling driver signature enforcement temporarily.
Find the device (often under "Other Devices" or "Sound, video and game controllers"). Right-click it > > Details tab. Conexant Fusion 878a Driver
If you have a driver file, use these steps to force an installation: Conexant Fusion 878a Windows 7 X64 Download - Facebook This is the most requested procedure