TweakTown posted a review on the Seasonic M12II 500watt Power Supply

The M12II features the ability to sustain a steady 500 watts of power flow. Both the 3.3v and 5v rails are rated at 24A power draw. This model has a dual 12v rail system with one rated at 17A and the other rated at 18A draw.

All cable assemblies included with the M12II are mesh wrapped to keep that beast called “Cable Management” at bay. There is also a decent selection of cable harnesses that come with this power supply.

Seasonic M12II 500watt Power Supply Review