Intel DH55HC - RJ-45 LAN Connector with Integrated Leds; LAN Connector LED Locations; LAN Connector LED States

Intel Desktop Board DH55HC Technical Product Specification
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1.12.3 RJ-45 LAN Connector with Integrated LEDs
Two LEDs are built into the RJ-45 LAN connector (shown in Figure 5).
Item Description
A Link/Activity LED (green)
B Link Speed LED (green/yellow)
Figure 5. LAN Connector LED Locations
Table 4 describes the LED states when the board is powered up and the LAN
subsystem is operating.
Table 4. LAN Connector LED States
LED LED Color LED State Condition
Off LAN link is not established.
On LAN link is established.
Link/Activity Green
Blinking LAN activity is occurring.
Off 10 Mbits/s data rate is selected or negotiated.
Green 100 Mbits/s data rate is selected or negotiated.
Link Speed Green/Yellow
Yellow 1000 Mbits/s data rate is selected or negotiated.