Back Panel - NETGEAR CM400 User Manual

You can use the LEDs to verify status and connections. The following table lists and
describes each LED on the front panel of the cable modem.
Table 1. LED descriptions
LED Description
Power
•
•
Downstream
•
•
•
•
Upstream
•
•
•
•
Internet
•
•
•
Ethernet
•
•
•
•

Back Panel

The back panel provides the connections and button shown the following figure.
LAN Gigabit Ethernet port
Figure 3. Cable modem back panel
CM400 High Speed Cable Modem
Green. Power is supplied to the cable modem.
Off. No power is supplied to the cable modem.
Solid amber. One downstream channel is locked.
Solid green. Two or more downstream channels are locked.
Blinking green. The cable modem is scanning for a downstream channel.
Off. No downstream channel is locked.
Solid amber. One upstream channel is locked.
Solid green. Two or more upstream channels are locked.
Blinking green. The cable modem is scanning for an upstream channel.
Off. No upstream channel is locked.
Solid green. The cable modem is online.
Blinking green. The cable modem is synchronizing with the cable provider's cable
modem termination system (CMTS).
Off. The cable modem is offline.
Green. A powered-on device is connected to the Ethernet port at 1000 Mbps.
Amber. A powered-on device is connected to the Ethernet port at 10/100 Mbps.
Blinking green or amber. The Ethernet port is processing traffic.
Off. No device is connected to the Ethernet port.
Power adapter input
Reset button
Hardware and Internet Setup
Coaxial cable connector
6