I would like to purchase a new case and power supply for an area x51-r2. I was looking at the Thermaltake CORE V21 Black Extreme Micro ATX Cube and EVGA 500 power supply. How do I know where to connect all of the cables from the case to the motherboard ? Power supply is pretty straightforward but the case I'm a little concerned about. Not sure where the power button cable would plug in to motherboard for example. The x51-r2 case is overheating.