3Com CMX manual Hardware Installation

Hardware Installation

1.Contact your local cable company. They can help you establish a cable Internet access account and install a cable access outlet in the room where your computer is located.

2.Prepare your workspace. If you are planning to wall-mount your cable modem, see page 11 in the User’s Guide & Reference or the perforated card that is part of this Installation Guide. Otherwise, prepare to use your cable modem by performing the following steps:

∙Position your computer near your cable outlet.

∙If you plan to install the modem on your desktop, attach the rubber feet to the bottom of the modem (see page 13 in the User’s Guide & Reference for details).

∙If you plan to wall-mount the modem, you will need the mounting template included as the last page of this guide (see page 11 in the User’s Guide & Reference for more information)

∙If you plan to stack the modem on top of 3Com OfficeConnect® products, you will need the stacking clips included with your modem (see page 13 in the User’s Guide & Reference for more information)

∙Place the modem where it will be near your computer and the cable outlet, leaving plenty of room to guide the cables away from the modem without crimping the cables.

∙The modem should have access to constant airflow.

∙Do not stack anything on top of the modem (see page 13 in the User’s Guide & Reference for information on stacking the cable modem on top of 3Com OfficeConnect products).

∙The temperature where the cable modem will be located should be within 0 and 40°C (32 and 104°F). Relative humidity should be between 5 and 95%, non-condensing.

3.Verify your computer is set up for networking. Windows users should install the TCP/IP protocol and Mac users should verify that networking support is installed. The cable modem requires your computer to have an RJ-45 Ethernet interface and TCP/IP

installed. See the “Before Your Begin” section in the User’s Guide & Reference for more information.