D-Link DE-805TP - Manual (Page 10)

6
Diagnostic LEDs
•
Power
If this LED is off, check to be certain you are using
the correct AC power adapter or if the adapter you
are using is damaged. (Note: if the other LEDs are
functioning, then it is possible that the Power LED is
bad and nothing is actually wrong.)
•
Collision
Excessive blinking of this LED indicates that the
traffic on the network is heavy. Since there are only
five ports on the DE-805TP, this situation generally
only occurs if multiple hubs are cascaded together. If
network speed is significantly affected, disconnect
non-essential stations or add a bridge.
•
Link/Rx
There is one Link/Rx LED for each port. For port 5,
this LED applies only when the port is set to the
“Normal” position. When the LED is on (for each
port), the data link between the port and the node
connected to it is functioning. If a node is connected
and the LED is off, check the cable, connector and
the power status of the node. This LED blinks when
data is being received.