I just realized that we all got a bum deal here.  Look at the backpanel,  it can accomodate only 5 boards.   Each board has 8 coincraft A1 chips, so a total of only 40 coincraft A1.  You can't add an additional board without a new back panel!

AMT appears to be selling a 1 GHs and saying it is 1.2 GHs.  

I may be wrong here,  but if these are Bitmine revision 2.0 boards then we are screwed.

If these are Bitmine revision 3.0 boards... then that's 50 chips ( 10 chips per board)...  and that would be a better situation.

Can you take out the boards and take a photo of them?