LOL! a fountain of information as usual.
But it's a M12 from 2006.
A 700 watt Seasonic
Probably not the OP's , he did say M12II.
If it were, I'd trust it, not running an sli setup on it anymore but my HX620 from 2006 still works like a champ
Moderator mousemonkey uses his HX620 from 2006 to power his 560 sli system.