Dell GX1 User Manual download pdf (Page 47)

Using the System Setup Program 2-13

NOTE: The

power management

feature monitors activity of a mouse connected to the

Personal System/2 (PS/2)-compatible mouse port.

By setting Power Management to

Maximum, Regular, or Minimum, you can set pre-

defined time-out periods (see Table 2-3) for the two successive monitor shutdown

stages,

standby

and

off

NOTE: Each monitor manufacturer defines the details of the shutdown stages for its

own monitors. But in all cases, power consumption decreases with each stage from

“on” (full power) to “standby” (reduced power; the display image usually disappears) to

“off” (where power consumption is minimal). To define these stages for your monitor,

see the documentation that came with the monitor.

From either shutdown stage, you can return full power to the monitor in one of the fol-

lowing ways:

 For most DPMS-compliant monitors, any subsequent activity—including moving

the mouse—should return full power to the monitor.

 A few DPMS-compliant monitors require that you turn monitor power off and

then on again to return to full power.

Check your monitor documentation for information on how your monitor is designed

to operate.

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For most systems, enabling Power Management at any level causes EIDE hard-disk

drives to switch to low-power mode after about 20 minutes of system inactivity (see

Table 2-3).

NOTES: All EIDE drives shipped with your system support this feature. (For more

information on Energy Star systems, see “Energy Star Compliance” in Chapter 1.)

However, not all EIDE hard-disk drives support this feature. Enabling this feature for

drives that do not support it may cause the EIDE drive to become inoperable until the

computer is restarted and the Power

Management option is disabled.

In low-power mode, the disks inside the drive stop spinning. They remain idle until the

next drive access, which causes them to start spinning again. (Because the disks take

a few seconds to regain full speed, you may notice a slight delay when you next

access the hard-disk drive.)

When Power Management

is set to

Disabled (the default), the disks spin con-

stantly as long as the system is turned on.

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