In Figure 17, you can see the power supply label containing all the power specs.
This power supply has two +12 V rails, and we can confirm that the over current protection (OCP) circuit supports two +12 V channels, and the unit has the necessary “shunts” (current sensors).
The available rails are distributed like this:
- +12V1 (solid yellow wire): Main motherboard cable, SATA connectors, peripheral connectors, and one of the video card connectors
- +12V2 (yellow/blue wire): ATX12V/EPS12V connectors, and one of the video card connectors
Now let’s see if this power supply can really deliver 550 W.