Desktop Board Features 
17 
LAN Subsystem 
The LAN subsystem, with Intel 82801HB (ICH8) provides the following functions: 
•  Intel 82566DC Gigabit (10/100/1000 Mb/s) Ethernet LAN controller 
•  Intel 82801HB I/O Controller Hub (ICH8)  
•  Support for RJ-45 connector with status indicator LEDs 
•  Programmable transit threshold 
•  Configurable EEPROM that contains the MAC address 
LAN Subsystem Software 
For LAN software and drivers, refer to the DG965SS link on Intel’s World Wide Web 
site at: 
http://support.intel.com/support/motherboards/desktop 
RJ-45 LAN Connector LEDs 
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.   
 
Figure 2.  LAN Connector LEDs  
Table 3 describes the LED states when the board is powered up and the LAN 
subsystem is operating. 
Table 3.  LAN Connector LEDs 
LED  LED Color  LED State  Indicates 
A  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 
Green  On   100 Mb/s data rate 
B 
Yellow  On  1000 Mb/s data rate