Apple's Airport Extreme Base Station (AEBS) unfortunately, does not have an ADSL or Cable modem built in and therefore you must purchase, and attach one to the AEBS to connect to the internet via your network. However, the majority of routers available from other vendors include ADSL/Cable modems, and are therefore more versatile. On the other hand, the AEBS is feature packed and is very easy to configure. It also makes setting up a WDS a doddle!