Rj-45 Lan Connector With Integrated Leds; Figure 5. Lan Connector Led Locations; Table 6. Lan Connector Led States - Intel DG41TY Technical Product Specification

Intel Desktop Board DG41TY Technical Product Specification
1.11.2

RJ-45 LAN Connector with Integrated LEDs

Two LEDs are built into the RJ-45 LAN connector (shown in Figure 5 below).
Table 6 describes the LED states when the board is powered up and the LAN
subsystem is operating.

Table 6. LAN Connector LED States

LED LED Color
Link Green
Data Rate Green/Yellow
28
Item Description
A Link LED (Green)
B Data Rate LED (Green/Yellow)

Figure 5. LAN Connector LED Locations

LED State
Off
On
Blinking
Off
Green
Yellow
Condition
LAN link is not established.
LAN link is established.
LAN activity is occurring.
10 Mbits/sec data rate is selected.
100 Mbits/sec data rate is selected.
1000 Mbits/sec data rate is selected.