 Variants of the user-installable AirPort Extreme card are marked A-1010 (early North American spec), A-1026 (current North American spec), A-1027 (Europe/Asia spec (additional channels)) and A-1095 (unknown).A different 802.11g card was included in the last iteration of the PowerPC-based PowerBooks and iBooks.A major distinction for this card was that it was the first "combo" card that included both 802.11g as well as Bluetooth.