Apple MB763LL Setup Guide - Page 36

Size and Weight  Length: 6.50 inches (165.0 mm)  Width: 6.50 inches (165.0 mm)  Thickness: 1.34 inches (34.0 mm)  Weight: 1.66 pounds (753 grams) Hardware Media Access Control (MAC) Addresses The AirPort Extreme has three hardware addresses printed on the bottom of the case:  AirPort ID: The addresses used to identify the AirPort Extreme on a wireless network.  Ethernet ID: You may need to provide this address to your ISP to connect the AirPort Extreme to the Internet. Using your AirPort Extreme Safely  The only way to shut off power completely to your AirPort Extreme is to disconnect it from the power source.  When connecting or disconnecting your AirPort Extreme, always hold the plug by its sides. Keep fingers away from the metal part of the plug.  Your AirPort Extreme should not be opened for any reason, even when it is unplugged. If your AirPort Extreme needs service, see "Learning More, Service, and Support" on page 33.  Never force a connector into the ports. If the connector and port do not join with reasonable ease, they probably don't match. Make sure that the connector matches the port and that you have positioned the connector correctly in relation to the port. 36 Appendix AirPort Extreme Specifications and Safety Guidelines