POWER - Connects the cable modem to the power adapter; REBOOT - Restores factory settings; ETHERNET - Connects to the Ethernet port; CABLE - Connects to coaxial cable with broadband: MAC Address. Click to enlarge. The information below is usually found on a sticker located on the bottom of the modem. The S/N is the serial number of the Netgear CM modem. CMD31T Cable Modem Part 2: Install the Cable Modem 1. Complete the connections as shown in the connections diagram. a. Connect the coaxial cable to the NETGEAR CMD31T Cable Modem. b. Use the Ethernet cable to connect your laptop or computer to the NETGEAR CMD31T Cable Modem. c. Connect the power adapter. 2. Power on your computer. Netgear CMD31T Drivers Download. Netgear CMD31T drivers are tiny programs that enable your Modem hardware to communicate with your operating system software. Maintaining updated Netgear CMD31T software prevents crashes and maximizes hardware and system performance. Using outdated or corrupt Netgear CMD31T drivers can cause system errors, crashes, Operating System: Windows XP, Vista, 7, 8,