Order wireless lan card?
im thinking of getting a wireless lan card, which one is the best one?
and what kind of speed is it possible to get through a wireless lan card in a pfsens router?
You can use only 802.11G so 54Mbps connections speed. You may get a card that supports 'SuperG' at 108Mbps but you'll need a client that is compatible. However you will never see 54Mbps across that link. Some googling will show you what actual speeds you might see.
I am using an Atheros AR5005 with no issues.