Intel DG41MJ User Manual download pdf (Page 16)

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 th

e status of the LAN.

Figure 2. LAN Connector LEDs

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 LED State Indicates

A (Link) Off LAN link is not established.

Green

On LAN link is established.

Blinking LAN activity is occurring.

N/A Off 10 Mb/s data rate is selected.

Green On 100 Mb/s data rate is selected.

B (Data

Rate)

Yellow On 1000 Mb/s data rate is selected.

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Intel DG41MJ User Manual Page 16