Using the AirPort Extreme with a Broadband Internet Service
When you set up your AirPort Extreme to provide network and Internet access, Mac computers with AirPort and AirPort Extreme Cards, and 802.11a, 802.11b, 802.11g, and IEEE 802.11n specification
It looks like this:
2.4 GHz
2.4 or 5 GHz
DSL or cable modem | < Internet WAN port |
to Internet
14Chapter 2 AirPort Extreme Networks