The interface between the wireless LAN module and the KeyLargo IC is a subset of the PCMCIA interface.
The module contains a media access controller (MAC), a digital signal processor (DSP), and a radio-frequency (RF) section. The module has a connector for the cable to the antennas, which are built into the computer's enclosure .
The wireless LAN module is based on the IEEE 802.11 standard. The wireless LAN module transmits and receives data at up to 11 Mbps and is compatible with older systems that operate at 1 or 2 Mbps. For information about its operation, see AirPort Card Wireless LAN Module.