Product specifications

7
2.3.1.4 FDX/COL LED
A collision occurs when two stations within a collision domain attempt
to transmit data at the same time. Intermittent flashing amber of the
LED is normal; the contending adapters resolve each collision by
means of a wait-then-retransmit algorithm. Frequency of collisions is a
message of heavy traffic on the network.
If the FDX/COL lights amber which means the port is under full-duplex
operation or dark for half-duplex mode.
The following table is a summary of LEDs.
LED Status Operation
Steady Green Power is on Power
Off Power is off
Steady Green Connected as 100Mbps 100M
Off Connected as 10Mbps
Steady Green The port is connected
Blinking Green The port is transmitting/receiving data.
Link/Act
Off No connection
Steady Amber Full-duplex mode
Blinking Amber Collision
FDX/COL
Off Half-duplex mode