ga-7n400pro vs. ga-7n400pro2

Hello,

Some months ago I bought what I thought was a GA-7N400pro2 board off
ebay. It worked fine until last week when it blew up (please help -
see other thread).

I managed to buy another off ebay and I noticed it was different in
appearance. it seems the second board is a genuine ga-7n400pro *2* and
my first board was actually a ga-7n400pro.

What were the differences between these boards? Is one any better than
the other?