What's the difference between these two power adapters?

http://cgi.ebay.com/65W-Power-Adapt...2QQihZ003QQcategoryZ11168QQrdZ1QQcmdZViewItem

and this:
http://cgi.ebay.com/Powerbook-G4-iB...0QQihZ016QQcategoryZ80064QQrdZ1QQcmdZViewItem


The second is identical to the adapter which came with my powerbook G4, but I was wondering if the 1st one would work... Also, why's there a wattage difference (45 vs 65) between the adapters?
Thanks..

There is no wattage difference between the two adapters you linked to.

D3v1L80Y said:

There is no wattage difference between the two adapters you linked to.

Click to expand...

oops... I meant to post this:
http://cgi.ebay.com/NEW-APPLE-POWER...7QQihZ014QQcategoryZ25436QQrdZ1QQcmdZViewItem