3COM LAN Card LED Descriptions
LED
Description
GREEN:
10 LNK
Link integrity
GREEN:
100 LNK
Link integrity
Yellow:
ACT
Port traffic for
either speed
Flashing
Reversed polarity
Good 10 Base-T
connection between
NIC and hub.
Reversed polarity
Good 100 TX
connection between
NIC and hub.
Network traffic
Heavy network
present
traffic
4 Interface Cards
Network Cards
Steady
Off
No connection
between NIC and
hub
No connection
between NIC and
hub
No traffic
85