Datasheet

Product Description

1.10 Hardware Management Subsystem

The hardware management features enable the board to be compatible with the Wired for

Management (WfM) specification. The SMSC SCH5017 I/O controller is used to implement

hardware monitoring and fan control. The features of the SMSC SCH5017 I/O controller 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

1.10.1 Fan Monitoring

Fan monitoring can be implemented using Intel

Desktop Utilities, LANDesk* software, or third-

party software.

For information about Refer to

The functions of the fan connectors Section 1.11.2.2, page 27

1.10.2 Chassis Intrusion and Detection

The board supports a chassis security feature that detects if the chassis cover is removed. The

security feature uses a mechanical switch on the chassis that attaches to the chassis intrusion

connector. When the chassis cover is removed, the mechanical switch is in the closed position.

For information about Refer to

The location of the chassis intrusion connector Figure 7, page 38

The signal names of the chassis intrusion connector Table 18, page 40

1.11 Power Management

Power management is implemented at several levels, including:

• Software support through Advanced Configuration and Power Interface (ACPI)

• Hardware support:

⎯ Power connector

⎯ Fan connectors

⎯ LAN wake capabilities

⎯ Instantly Available PC technology

⎯ Resume on Ring

⎯ Wake from USB

⎯ Wake from PS/2 devices

⎯ Power Management Event signal (PME#) wake-up support