Product Description 
 31 
1.12 LAN Subsystem 
The LAN subsystem includes the Intel
®
 82573 Gigabit (10/100/1000 Mbits/sec) Ethernet 
Controller and an RJ-45 LAN connector with integrated status LEDs. 
1.12.1 Intel
®
 82573E/82573V/82574V Gigabit Ethernet Controller 
The Intel 82573E/82573V/82574V Gigabit Ethernet Controller supports the following features: 
•  PCI Express link 
•  10/100/1000 IEEE 802.3 compliant 
•  Compliant to IEEE 802.3x flow control support 
•  Jumbo frame support 
•  TCP, IP, UDP checksum offload 
•  Transmit TCP segmentation 
•  Advanced packet filtering 
•  Full device driver compatibility 
•  PCI Express Power Management Support 
The 82573E Gigabit Ethernet Controller also supports Alert Standard Format (ASF) 2.0.   
1.12.2  RJ-45 LAN Connector with Integrated LEDs 
Two LEDs are built into the RJ-45 LAN connector (as shown in Figure 13).  Table 5 describes the 
LED states when the board is powered up and the Gigabit LAN subsystem is operating. 
Green LED
Green/Yellow LED
OM16513
 
Figure 13.  LAN Connector LED Locations 
Table 5.  LAN Connector LED States 
LED Color LED State  Condition 
Off  LAN link is not established. 
On  LAN link is established. 
Left Green 
Blinking  LAN activity is occurring. 
N/A  Off  10 Mbits/sec data rate is selected. 
Green  On  100 Mbits/sec data rate is selected. 
Right 
Yellow 
On 
1000 Mbits/sec data rate is selected.