Intel Motherboards : J4205 CPU Speed

First off, Happy New Year to all!

I recently purchased a J4205 Embedded Mobo.

The specs call for a max of 2.6Ghz processor speed but when looking at the setup page, it tells me the speed range is only from 800Mhz to 1.5Mhz and from what I can see, non adjustable. It works, but not at its advertised speed.

So...

B) Is the CPU adjustable to 2.6Ghz, and if so, how is it done, or...

A) Do I have a bad board? And...

B) Is there a better embedded board to use for a media center (4k output)?

Many thanks in advance.

Steve