Pros: Silent. Hard to know when it is on. Silent. Soundless. Silent. Noiseless. Did I mention silent?

Cons: Hard to tell when the computer is on.

Overall Review: Love the power supply. The images don't show how the cords are wrapped in the black mesh. The 20+4 ATX power connector is not a single part, per se, but it does take some doing to unsnap one side of it. I wound up having to cut the plastic in order to install it into an old board where the caps are right next to the ATX power connector. Still love the quiet, noiseless, soundless quality of this Power supply.

Pros: Quiet. Effective. Keeps the CPU cool, and the system whisper quiet.

Cons: Retaining bracket requires removing the fan to install on the CPU.