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In theory it should not matter where you plug the surface in to the power.
However, I recently did a show where I set up the band monitors with the control surface next to the stage (r72 surface) and then when i was ready, moved it to the back of the hall using a local power point.
Even before the console was powered up I had the ‘buzz from hell’ over front of house and monitors!
As soon as the ace link cable touched the r72 in any way I had buzz.
My feeling is it was seriously bad power at that power point. I tried another only a few meters away and all was fine.

R72 & IDR32
MacBook pro
iPad 2
Airport express router