NETGEAR CM400 User Manual

Troubleshooting
23
CM400 High Speed Cable Modem
If the cable modem does not save changes you made, do the following:
• When entering configuration settings, be sure to click the Apply button before moving to
another screen, or your changes are lost.
• Click the Refresh or Reload button in the web browser. The changes occurred, but the
web browser might be caching the old configuration.
Troubleshoot the Cable Internet Connection
If your cable modem cannot access the Internet but the Internet LED lights green,
register the cable MAC address or device MAC address of your cable modem with your cable
Internet provider (see Contact Your Cable Internet Provider and Set Up Internet Service on
page 9).

NETGEAR CM400 Specifications

General

Modem speed	340000 Kbit/s
Flash memory	8 MB
Product color	Black
Internal memory	64 MB
Copper ethernet cabling technology	10BASE-T, 100BASE-TX, 1000BASE-T
DC-in jack	Yes
Ethernet LAN (RJ-45) ports	1
Browser supported	Microsoft Internet Explorer 5.0, Firefox 2.0, Safari 1.4, Google Chrome 11.0
Compatible operating systems	Microsoft Windows 7, 8, Vista, XP, 2000, Mac OS
Cables included	LAN (RJ-45)
Internal	No
Certification	CableLabs
Compatibility	DOCSIS 3.0 / DOCSIS 2.0
Power supply type	DC
Networking features	Gigabit Ethernet

Weight and Dimensions

Weight	190 g
Dimensions (WxDxH)	96 x 30 x 147 mm