TYAN S5550 Manual page 44

Onboard LAN LED Color Definition
The five (5) 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
10 Mbps
100 Mbps
1000 Mbps
No Link
Link
Active Blinking Green
Link
Active Blinking Green
Link
Active Blinking Green
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Left LED
Green
Green
Green
Off
44
Right LED
Off
Off
Green
Green
Amber
Amber
Off