Dell Precision 7920 Tower Owner's Manual

Power management

Table 1. Power ManagementThe table describes the power management options.
Option	Description
AC Recovery	Specifies how the computer will respond when AC power is applied after a AC power loss. You can set the AC Recovery to: Power Off (Default) Power On Last Power State
Auto On Time	Allows you to set the time at which the computer must turn on automatically. The options are: Disabled (Default) Every Day Weekdays Select Days
Deep Sleep Control	Allows you to define the controls when Deep Sleep is enabled. Disabled (Default) Enabled in S5 only Enabled in S4 and S5
USB Wake Support	Allows you to enable USB devices to wake the system from standby. Enable USB Wake Support Default Setting: The option is disabled.
Wake on LAN	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. This option is Disabled by default.
Block Sleep	Allows you to block entering to sleep (S3 state) in OS Environment. Default Setting: Disabled