Now that it is all set up and plugged in, insert the main power plug into the back of the PSU and the wall, turn on the switch and start the computer. Sit back and enjoy the work you have just accomplished. Here you can see the nice blue glow that the power supply gives off in my system. I love how it is just the right amount of light, not too dim and not bright. Perfect to accentuate the internals of the system.