820-2936 EMC1412-A not there, should it be?

[G.Beard]

Looking at an empty space where U5520 would be. The schematic does not say no stuff but it's not there.
This board has previously been worked on so I wonder if someone stole it?

No. Just looked at another one.

 

[dukefawks]

U5520 should be there but it won't affect the board at least turning on and chiming.