Linksys Guide to Cable Modem LED Indicators and Features

Cable Modem with USB and Ethernet Connections

Front Panel LEDs

The Cable Modem’s LEDs are located on the front panel.

	Figure 2-2: Front Panel
Power	Green. The Power LED lights up when the Cable Modem is powered on. It stays solid after the
	self-test. If the LED lights up red, the self-test has failed.
Internet, Online	Green. The Online LED flashes when the Cable Modem is establishing a connection to your
	cable ISP. It is solidly lit when the Cable Modem is synchronized with your cable ISP.
Internet, DS	Green. The DS (Downstream) LED lights up and flashes when the Cable Modem is trying to
	lock on a downstream signal. The LED stays solid when it has locked on the signal.
Internet, US	Green. The US (Upstream) LED lights up and flashes when the Cable Modem is trying to lock
	on an upstream signal. The LED stays solid when it has locked on the signal.
Ethernet	Green. The Ethernet LED lights up when the Cable Modem is connected to your computer or
	network through the Ethernet port. It flashes when there is activity on the Ethernet port. The
	LED will light up orange when there is a data collision.
USB	Green. The USB LED lights up when the Cable Modem is connected to your computer or
	network through the USB port. It flashes when there is activity on the USB port. The LED will
	light up orange when the USB is connected and before the driver is installed.

NOTE: If the US and DS LEDs are flashing, the modem is still operating, but your Internet service has been disabled by your Internet Service Provider.

NOTE: If the US, DS, and Online LEDs are flashing, the modem is performing a self-test.

Chapter 2: Getting to Know the Cable Modem 4

Front Panel LEDs