The CM MAC (Cable Modem MAC address) and Serial Number of your cable modem are printed on the bottom label. This first set of devices are for our MB Units. The second set farther down the page is for our MG and MT units. You can find the model of you device on the box.
(Note: The labels below may vary depending on your cable modem’s model revision and features.)
MB Units
Model MB7220 & MB7420:
Model MB7621, MB8600 & MB8611:
MG/MT Units
Model MG7310, MG7315, MG7540, MG7550, MG7700 & MT7711:
Model MG8702:
Model MG8725 & MT8733:
If this has not helped and you are still having trouble. Please contact us at (512)-877-6466 or email us at support@motorolanetwork.com