Dell Inspiron 3700 Reference Manual page 144

Disk Time-out
Disk Time-out lets you determine how long your hard-disk drive remains idle before the drive motor turns off to conserve battery power.
NOTE: This feature does not function with the ACPI.
The AC option is set to Disabled. No user-selectable settings are available for this option. Settings for the Battery option are:
Disabled 5 Minutes
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15 Seconds 10 Minutes
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1 Minute 15 Minutes
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2 Minutes 30 Minutes
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3 Minutes 1 Hour
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4 Minutes
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The default is 3 Minutes if the computer is powered by a battery or 1 Minute if the computer is using AC power. To increase battery operating
time, set Disk Time-out to a lower number. However, if your software requires frequent hard-disk drive accesses, using a higher time-out setting
may save battery power and time by minimizing the number of times the hard-disk drive must power up.
NOTE: Set Disk Time-out to Disabled if using it causes compatibility problems with your software.
A change to the Disk Time-out option takes effect immediately (rebooting is not required).
If you are not in the System Setup program, you can turn off the hard-disk drive immediately by pressing <Fn><h>. The drive resumes normal
operation automatically when it is accessed by the microprocessor.
NOTE: Certain key combinations may not function with the ACPI or may require configuration with the Power Management Properties
window in the Control Panel. See
Diskette Drive A
Diskette Drive A identifies the location of the 3.5-inch diskette drive: Media Bay, Parallel Port, or Not Installed. No user-selectable settings are
available for this option.
Diskette Drive B
Diskette Drive B identifies the location of a second 3.5-inch diskette drive: Parallel Port, Media Bay, or Not Installed. No user-selectable
settings are available for this option.
Diskette Reconfig
Diskette Reconfig allows application programs that access the diskette drive to run at their optimum speed. Settings are At Reboot Only and
Any Time.
When Diskette Reconfig is set to Any Time (the default), you do not have to reboot after you install a diskette drive in the media bay or attach a
diskette drive to the parallel connector on the back of the computer. However, some application programs such as virus scans that access the
diskette drive will run very slowly if the diskette drive is not in the media bay or connected to the parallel port. When Diskette Reconfig is set to At
Reboot Only, such application programs run at normal speed, but you must reboot after installing or attaching a diskette drive.
Display Close
Display Close lets you determine whether your computer enters standby mode when the display is closed or whether only the display is turned off.
Standby (the default) — Allows the computer to enter standby mode when the display is closed.
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Active — Turns off the display, but does not put the computer into standby mode.
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"Power Management Settings".