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Resolved Mac Pro Server (Mid 2012) strange antics powering up
Just bought another cMP 5,1 Server (Mid 2012) Quad-Core (single CPU). When I first plugged the power cable in it started automatically before I even hit the power button. All good, so I upgraded the firmware from the original 7F to 89, then popped a RX 580 in and upgraded to 144.0.0.0.0, but...