Corsair CX600 different max wattages

hi, I purchased a CX600 supply a few weeks back and it's working great, but im kind of puzzled that the box shows this wattage https://dl.dropbox.com/u/41185950/DSCF0374.JPG and the PSU itself shows this https://dl.dropbox.com/u/41185950/DSCF0375.JPG 

 

im guessing it was manufactured recently because it mentions the AXI series... Has anyone else seen this before

 

(i looked on the newegg site and their image is rated for 480W lol)

It's the same amperage and voltage. Wattage= amperate * voltage. So, I'm guessing one has a typo.