Apple MB763LL Setup Guide - Page 6

 Create a guest network with or without password protection, to provide Internetonly access to wireless devices, such as computers, iPhone, iPod touch, and Apple TV.  Connect your AirPort Extreme to your Ethernet network. Wireless-equipped Macintosh computers, Windows XP, or Windows Vista computers can then have access to an entire network without being connected by a cable.  Connect a supported USB printer to your AirPort Extreme. All of the compatible computers on the AirPort network, both wireless and wired, can print to it.  Connect a USB hard disk to your AirPort Extreme. All of the compatible computers on the AirPort network, both wireless and wired, can access the information on the hard disk.  Connect a USB hub to your AirPort Extreme, and then connect multiple USB devices, such as printers or hard disks. All of the computers on the network have access to those devices. Important: Install AirPort Utility 5.4 from the CD that came with your simultaneous dual-band AirPort Extreme Base Station, or download it using Software Update, and use it to set up your base station. Previous versions of AirPort Setup Assistant and AirPort Admin Utility are not compatible with this base station. About the AirPort Extreme The AirPort Extreme has five ports, located on the back:  One 10/100/1000Base-T Gigabit Ethernet Wide Area Network (WAN) port (