Is my power brick genuine?

I've heard there are many counterfeit 330w Power bricks so I'm a little bit scared to use one. Could anyone from dell validate the S/N on these power bricks for me please? One was bought off amazon and the other on ebay, both listed as "genuine".

S/N = CN-0Y90RR-DES00-71Q-01A0-A06

S/N = CN-0Y90RR-48661-39Q-1C25-A02

Here's a picture wtih both bricks...  (amazon left, ebay right)