In Figure 14, you can see the power supply label containing all the power specs.

click to enlarge
Figure 14: Power supply label.

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

• +12V1 (solid yellow wire): All cables but the ATX12/EPS12V.
• +12V2 (yellow with green stripe wire): ATX12V/EPS12V connectors.

This is the standard distribution for a two-rail power supply.

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