Product guide for Intel Desktop Board D2550MUD2

Intel Desktop Board D2550MUD2 Product Guide

LAN Subsystem

The LAN subsystem consists of the following:

• Intel NM10 Express Chipset

• Intel 82574L Gigabit Ethernet Controller for 10/100/1000 Mb/s Ethernet LAN

connectivity

• RJ-45 LAN connector with integrated status LEDs

Additional features of the LAN subsystem include:

• CSMA/CD protocol engine

• LAN connect interface that supports the Ethernet controller

• Conventional PCI bus power management

 Supports ACPI technology

 Supports LAN wake capabilities

LAN drivers are available from Intel’s World Wide Web site at

http://downloadcenter.intel.com/

Two LEDs are built into the RJ-45 LAN connector located on the back panel (see

Figure 4). These LEDs indicate the operating states of the LAN.

Figure 4. LAN Status LEDs

Table 4 describes the LED states when the board is powered up and the LAN

subsystem is operating.

Table 4. LAN Status LEDs

LED LED Color LED State Indicates

Activity (A)

Green

Blinking

LAN activity is occurring.

Speed (B)

N/A

Off

10 Mb/s data rate is selected.

Green

100 Mb/s data rate is selected.

Yellow

1000 Mb/s data rate is selected.