Red light flashes briefly on Mac Pro as I turn on my UPS.
Could anyone here perhaps assist and help me understand why my mid 2010 Mac Pro has a red light that flashes as I turn on my UPS?
It happens very quickly and doesn't stay on, just as i hit power on at the front of the ups and then the red light goes off. I can see it through the front grill of the Mac Pro.
Switching on the Mac works fine and it runs perfectly normal as well.
I opened the machine and tried seeing which light goes on and it's at the top of the motherboard, just under the first harddrive but thins there are so tiny I couldn't see which light it was that flashes and it also happens real quickly. I also couldn't repeat it the second time I turned on the ups.
Should I rather not use this ups? Does anyone know what the reasons are for this happening?
Mac Pro, OS X Mountain Lion (10.8.4), 10 GB RAM,Cranesong,Mytek,LP 9.1.8