In Figure 15, you can see the power supply label containing all the power specs.

click to enlarge
Figure 15: Power supply label.

This power supply features two +12 V virtual rails distributed like this:

• +12V1 (solid yellow wire): All cables but the ATX12V/EPS12V.
• +12V2 (yellow with black stripe wire): ATX12V/EPS12V connectors.

This is of course a very limited distribution, because it assumes that the CPU will be pulling the same amount of current/power than all other devices combined, which isn’t true if you have a high-end video card.

Now let’s see if this power supply can really deliver 550 W.