The card has 2.4 Ghz printed on it. I guess you don't have one. Huh. For $60 its worth the try. Everybody keeps telling me that the "g" isn't faster than the "b", but all I know is what I see. It is incredibly faster. I am not restricted by my internet hookup. I have the widest bandwidth you can get through a cable modem. Maybe it is just the external antenna on the PC card? Compared to Apple's built-in Airport card/software on my Ti it screams. Steve Hartong www.naperinsure.com (630) 217-3819