6 Power Management States

The following power management states are available for the Workstation 820:

• Unplugged

  The Advanced Configuration and Power Interface (ACPI) specification refers to the unplugged state as mechanical off.

  In this state:

  • The AC power cord is not connected to a wall outlet.

  • The power button LED is off.

  • The LCD is blank.

• NOPOWER

  The ACPI specification refers to the NOPOWER state as S5, or a soft-off state in which the power supply remains active but delivers minimal power to key circuits to detect a power button or wake-on-LAN event.

  In this state:

  • The AC power cord is connected to a wall outlet.

  • The operating system and applications are not running.

  • The RAM contents are undefined.

  • The power button LED is white and fades in and out.

  • The LCD is off.

• ON

  In this state:

  • The operating system and POS application are in operation.

  • The RAM contents are maintained.

  • The power button LED is white.

• ON, in BIOS utility

  In this state:

  • The BIOS configuration utility is in operation.

  • The power button LED is white and blinks off and on.