Mini Cards

[Smallfri]

I recently purchased a Dell laptop that came with 3945 802.11a/g wireless mini card. The one I started to buy he told me I needed 1390 WLAN 802.11g, 54 mbps mini card. Will the one that came with it listed first work?? Not computer savy, so please help and make it simple.
Thanks for any answers on this one.

 

[El0him]

He's trying to make money... probably gets a BIG commission from selling it...