They were PCMCIA form factor but don't have an antenna built in. They were installed internally anyway and connected to the laptop antenna. Not sure if they were even PCMCIA standard cards, may have been some proprietory Apple Airport connector.

The Airport's have got a full sized Orinoco PCMCIA card inside however.

The 3Com 802.11b card with the extendable XJACK antenna could be a work around.

- Trevor