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Chapter 4 • DW4020 LEDs and troubleshooting
62
1031484-0001 Revision 2
Ethernet port LEDs
Each of the four Ethernet ports on the DW4020 has two LEDs
associated with it. One LED is green and one is yellow. See
Figure 50).
The green LED will be on if power is applied to the DW4020 and
a 100baseT Ethernet device is connected to the corresponding
Ethernet port. Otherwise, the green LED will be off.
If the power is on and the light is off while a network device is
connected, then the device is a 10baseT device and the port is
autosensing.
The yellow LED will also be on when power is applied to the
DW4020. It will flash momentarily when there is LAN activity
on the corresponding Ethernet port.
Figure 50: Ethernet port LEDs
Green LED Yellow LED