Computer Setup—Power

NOTE: Support for specific Computer Setup options may vary depending on the hardware configuration.

Table 3-5Computer Setup—Power

Option

Description

 

 

OS Power

● Runtime Power Management— Enable/Disable. Allows certain operating systems to reduce

Management

processor voltage and frequency when the current software load does not require the full

 

capabilities of the processor. Default is enabled.

 

● Idle Power Savings—Extended/Normal. Allows certain operating systems to decrease the

 

processors power consumption when the processor is idle. Default is extended.

 

● ACPI S3 Hard Disk Reset — Enable/disable. Enabling this causes the BIOS to ensure hard

 

disks are ready to accept commands after resuming from S3 before returning control to the

 

operating system.

 

● Unique Sleep State Blink Rates—Enable/Disable. This feature is designed to provide a

 

visual indication of what sleep state the system is in. Each sleep state has a unique blink

 

pattern. Default is disabled.

 

◦

S0 (On) = Solid green LED.

 

◦

S3 (Stand By)= 3 blinks at 1Hz (50% duty cycle) followed by a pause of 2 seconds

 

 

(green LED) — repeated cycles of 3 blinks and a pause.

 

◦

S4 (Hibernation)= 4 blinks at 1Hz (50% duty cycle) followed by a pause of 2 seconds

 

 

(green LED) — repeated cycles of 4 blinks and a pause.

 

◦

S5 (Soft Off) = LED is off.

 

NOTE: If this feature is disabled, S4 and S5 both have the LED off. S1 (no longer

 

supported) and S3 use 1 blink per second.

 

 

Hardware Power

SATA Power Management – Enables or disables SATA bus and/or device power management.

Management

Default is enabled.

 

S5 Maximum Power Savings—Turns off power to all nonessential hardware when system is off to

 

meet EUP Lot 6 requirement of less than 1 Watt power usage. Default is disabled.

 

 

Thermal

Fan idle mode—This bar graph controls the minimum permitted fan speed.

 

NOTE: This setting only changes the minimum fan speed. The fans are still automatically

 

controlled.

 

 

 

26 Chapter 3 Computer Setup (F10) Utility