Yeah dude, they are intake and there is no outtake fan. They generally just have mesh on the back that the circulating air pushes out. I am not going to buy one of these ever again. I am sold on pcpowerandcooling supplies. See with a 120-140mm fan design the problem is that since you have that huge fan in there the height of your heatsinks is lower. Thus the ability to dissipate heat under heavy load is less. Plus if you look at the small print most of those supplies and their advertising gimmicks are tested under 25C environment which isn't realistic. PCpowerandcooling's supplies claims to performance are based under more realistic conditions: 40C.
Plus single rail seems to be the way to go. Their claim on their website about the myths of powersupplies certainly was true in my case with my x2 connect 550; one of the rails becomes tied up and isn't able to use the remaining unused amperage to help power my x1900xt. I'm going to upgrade to a silencer 750.
Good luck dude.