TYAN TOMCAT K8E-SLI Manual page 40

Onboard LAN LED Color Definition
The three onboard Ethernet ports have green and yellow LEDs to indicate LAN
status. The chart below illustrates the different LED states.
10/100/1000 Mbps LAN Link/Activity LED Scheme
Link
10 Mbps
Active
Link
100 Mbps
Active
Link
1000 Mbps
Active
No Link
Left LED
Green
Blinking Green
Green
Blinking Green
Green
Blinking Green
Off
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Right LED
Off
Off
Green
Green
Yellow
Yellow
Off