Power Management - Dell Precision 7820 Owner's Manual

Power management

Table 9. Power Management
Option
AC Recovery
Auto On Time
Deep Sleep Control
USB Wake Support
Wake on LAN
Block Sleep
Description
Specifies how the computer will respond when AC power is applied after an AC power loss.
You can set the AC Recovery to:
• Power Off—Default
• Power On
• Last Power State
Allows you to set the time at which the computer must turn on automatically.
Click one of the following options:
• Disabled—Default
• Every Day
• Weekdays
• Select Days
Allows you to define the controls when Deep Sleep is enabled.
Click one of the options:
• Disabled—Default
• Enabled in S5 only
• Enabled in S4 and S5
Allows you to enable USB devices to wake the system from standby.
• Enable USB Wake Support
This option is set by default.
This option allows the computer to power up from the off state when triggered by a special LAN signal.
Wake-up from the Standby state is unaffected by this setting and must be enabled in the operating
system. This feature only works when the computer is connected to AC power supply.
• Disabled - Does not allow the system to power on by special LAN signals when it receives a wake-up
signal from the LAN or wireless LAN.
• LAN Only - Allows the system to be powered on by special LAN signals.
• LAN with PXE Boot - Allows the system to power on and immediately boot to PXE when it receives a
wake-up packet sent to the system in either the S4 or S5 state.
All the options are not set by default.
Allows you to block entering to sleep(S3 state) in OS Environment.
This option is not set by default.
System Setup 81