I got a Corsair AX850 for my new i7 3770K (Z77 EVGA board) and got a big surprise - there are absolutely no markings on the PSU outputs. The manual is a waste of paper; no useful information! The product information at Corsair's site did not reveal any info either.
Finally after browsing many forums I found the information that I was seeking at overclockers.net
Subsequently, Corsair added this info on their website in an obscure area, well hidden!
Surprisingly, the AX850 is superseded by the AX860i and the PSU outputs are clearly silk screened in white. Maybe this is why I got the AX850 at a good discount from Newegg and a rebate from Corsair!