That board is from 2006, and is not supported on Windows 10. What drivers there are can be found here under downloads and software:
Is there a reason you need the ME?
Also, any processor and graphics are not supported under Windows 10.
This "Simple Communications Controller" is the interface to the Intel Management Engine (ME). Unless you need support for communication with the ME, just ignore this missing driver. It doesn't hurt anything having this left unresolved.