The fluorescent lights of the security office hummed in B-flat, a sound that Marcus had long ago tuned out. What he couldn’t tune out was the blinking red light on the server rack, and the absolute silence where there should have been the whir of a cooling fan.
"Meaning?"
Open the cover and locate the small silver coin-cell battery (CR2032) on the motherboard. Remove it carefully. raysharp+dvr+password+reset+top
This is the official method for RaySharp DVRs connected to a router with internet access. The fluorescent lights of the security office hummed