Multiband utilizes the MAC address from your networking device to provide a method of authentication. The MAC address is used for security reasons because it is unique to each individual networking device. The subsequent information will inform you how to locate the MAC address from your Cable and DSL Modem.
Note: With networking devices, the MAC address or addresses are usually located on a label on the device itself.
Locating the MAC address on a DSL modem is not necessary.