Lan Subsystem Software; 1.12 Hardware Management Subsystem; Hardware Monitoring And Fan Control Asic - Intel D975XBX2 - Desktop Board Motherboard Specification

1.11.5

LAN Subsystem Software

LAN software and drivers are available from Intel's World Wide Web site.
For information about
Obtaining LAN software and drivers

1.12 Hardware Management Subsystem

The hardware management features enable the board to be compatible with the Wired
for Management (WfM) specification. The board has several hardware management
features, including the following:
• Fan monitoring and control (through the hardware monitoring and fan control
ASIC)
• Thermal and voltage monitoring
• Chassis intrusion detection
• Support for Product Environmental Control Interface (PECI)
1.12.1

Hardware Monitoring and Fan Control ASIC

The features of the hardware monitoring and fan control ASIC include:
• Internal ambient temperature sensor
• Two remote thermal diode sensors for direct monitoring of processor temperature
and ambient temperature sensing
• Power supply monitoring of five voltages (+5 V, +12 V, +3.3 VSB, +1.5 V, and
+VCCP) to detect levels above or below acceptable values
• Thermally monitored closed-loop fan control, for all three fans, that can adjust the
fan speed or switch the fans on or off as needed
• SMBus interface
For information about
The location of the fan headers and sensors for thermal monitoring
Product Description
Refer to
Section 1.2, page 17
Refer to
Figure 13, page 38
37