Section 1 - Product Overview 
D-Link DSL-2542B User Manual 
6 
Hardware Overview
LEDs
Power 
A steady green light indicates the unit is powered on. 
When the device is powered off this remains dark. Lights 
steady green during power on self-test (POST). Once the 
connection status has been settled, the light will blink 
green. If the indicator lights steady green after the POST, 
the system has failed and the device should be rebooted. 
Internet 
A solid green light indicates the WAN IP address from IPCP or 
DHCP and DSL is up or a static IP address is configured and 
PPP negotiation has been successfully completed. If the 
indicator blinks green, this means the Router is active. If the 
Router power is off, this remains dark. A solid red light indicates 
there is no DHCP response, no PPPoE response, PPPoE 
authentication has failed, and/or there is no IP.
DSL 
A steady green light indicates a valid 
ADSL connection. This will light after 
the ADSL negotiation process has 
been settled. A blinking green light 
indicates activity on the WAN 
(ADSL) interface. 
LAN 
A solid green light indicates a valid link on 
startup. This light will blink when there is activity 
currently passing through the Ethernet port.