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Intel Desktop Board DG41MJ Product Guide
LAN Subsystem
The LAN subsystem includes:
•
Intel ICH7
•
Realtek 8111D-GR Gigabit Ethernet Controller for operation at 10/100/1000 Mb/s
•
RJ-45 LAN connector with integrated status LEDs
The subsystem features:
•
CSMA/CD protocol engine
•
LAN connect interface between ICH7 and the LAN controller
•
PCI bus power management
Two LEDs are built into the RJ-45 LAN connector located on the back panel (see
Figure 2). These LEDs indicate the status of the LAN.
Table 4 describes the LED states when the board is powered up and the LAN
subsystem is operating.
Table 4. LAN Connector LEDs
LED
LED Color
A (Link)
Green
B (Data
N/A
Rate)
Green
Yellow
16
Figure 2. LAN Connector LEDs
LED State
Off
On
Blinking
Off
On
On
Indicates
LAN link is not established.
LAN link is established.
LAN activity is occurring.
10 Mb/s data rate is selected.
100 Mb/s data rate is selected.
1000 Mb/s data rate is selected.
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