"Ditto user chattoed. I also ordered a 400W switching dual fan powersupply, which ALSO came in a box with no packaging material whatsoever. I haven't cared until now, when I found out through my BIOS and my hardware monitoring software that the +12 voltage was dangerously dropping below the safe level. I switched this powersupply for a 300W one and what happens? The +12 voltage becomes fine, and all the fans in my tower case spin twice as fast! This "400W" powersupply was complete crap and if left alone could have in the long term ruined my entire system.
Do NOT order power supplies from Openlinx."