HP Z4 Maintenance and Service Guide - Page 50

Table 5-3, Power On from Keyboard Ports

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Table 5-3 Computer Setup-Advanced (for advanced users) (continued) Option Heading ● All legacy ● All UEFI ● All UEFI except video Mini OROM Display Policy This policy controls whether optional ROM text appears in a small window on the splash screen until a key is pressed. Power Management Options Runtime Power Management (enable/disable) Allows certain operating systems to reduce processor voltage and frequency when the current software load does not require the full capabilities of the processor. Default is enabled. Extended Idle Power States (enable/disable) Allows certain operating systems to decrease the processors power consumption when the processor is idle. Default is enabled. Hardware Power States (enable/disable) Enabling this feature controls whether computer or the operating system has final control over power states. S5 Maximum Power Savings (enable/disable) Enabling this feature reduces the power of the system to less than 0.5W when the system is in the S4 or S5 state. Power is removed from the expansion slots and one of the on-board network connections. The AMT-enabled network connection may be used to wake on LAN with this feature enabled. Default is disabled. SATA Power Management (enable/disable) Enables or disables SATA bus and/or device power management. Default is enabled. PCI Express Power Management (enable/disable) Enabling this option permits the PCI Express links to use Active Power State Management (ASPM) to enter lower power states while not in use. Default is enabled. Unique Sleep State Blink Rates (enable/disable) This feature is designed to provide a visual indication of what sleep state the system is in. Each sleep state has a unique blink pattern. Default is disabled. NOTE: A normal shutdown goes to the S4 state for Windows 8 or later. S0 (On) = Solid white LED. S3 (Stand By)= 3 blinks at 1Hz (50% duty cycle) followed by a pause of 2 seconds (white LED) - repeated cycles of 3 blinks and a pause. S4 (Hibernation)= 4 blinks at 1Hz (50% duty cycle) followed by a pause of 2 seconds (white LED) - repeated cycles of 4 blinks and a pause. S5 (Soft Off) = LED is off. Power On from Keyboard Ports (enable/disable) When enabled, this feature allows a key press to power on the system when it is off (S5 state). If using a USB keyboard, it must be plugged into one of the rear ports labeled with the keyboard icon. Default is disabled. Remote Management Options Intel Management Engine (ME) (enable/disable). Default is enabled. This option allows a user to disable the Intel Management Engine, which disables Intel Active Management Technology and all underlying Intel ME technologies. This option also disables ME functions that allow for ME firmware updates. It is suggested to periodically enable this option to update ME firmware, as the ME firmware may contain platform stability fixes. 42 Chapter 5 Computer Setup (F10) Utility

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Table 5-3
Computer Setup—Advanced (for advanced users) (continued)
Option
Heading
●
All legacy
●
All UEFI
●
All UEFI except video
Mini OROM Display Policy
This policy controls whether optional ROM text appears in a small window on the splash screen until a key
is pressed.
Power Management
Options
Runtime Power Management
(enable/disable)
Allows certain operating systems to reduce processor voltage and frequency when the current software
load does not require the full capabilities of the processor. Default is enabled.
Extended Idle Power States
(enable/disable)
Allows certain operating systems to decrease the processors power consumption when the processor is
idle. Default is enabled.
Hardware Power States
(enable/disable)
Enabling this feature controls whether computer or the operating system has
final
control over power
states.
S5 Maximum Power Savings
(enable/disable)
Enabling this feature reduces the power of the system to less than 0.5W when the system is in the S4 or
S5 state. Power is removed from the expansion slots and one of the on-board network connections. The
AMT-enabled network connection may be used to wake on LAN with this feature enabled. Default is
disabled.
SATA Power Management
(enable/disable)
Enables or disables SATA bus and/or device power management. Default is enabled.
PCI Express Power Management
(enable/disable)
Enabling this option permits the PCI Express links to use Active Power State Management (ASPM) to enter
lower power states while not in use. Default is enabled.
Unique Sleep State Blink Rates
(enable/disable)
This feature is designed to provide a visual indication of what sleep state the system is in. Each sleep
state has a unique blink pattern. Default is disabled.
NOTE:
A normal shutdown goes to the S4 state for Windows 8 or later.
S0 (On) = Solid white LED.
S3 (Stand By)= 3 blinks at 1Hz (50% duty cycle) followed by a pause of 2 seconds (white LED) — repeated
cycles of 3 blinks and a pause.
S4 (Hibernation)= 4 blinks at 1Hz (50% duty cycle) followed by a pause of 2 seconds (white LED) —
repeated cycles of 4 blinks and a pause.
S5 (Soft
Off)
= LED is
off.
Power On from Keyboard Ports
(enable/disable)
When enabled, this feature allows a key press to power on the system when it is
off
(S5 state). If using a
USB keyboard, it must be plugged into one of the rear ports labeled with the keyboard icon. Default is
disabled.
Remote Management
Options
Intel Management Engine (ME)
(enable/disable). Default is enabled.
This option allows a user to disable the Intel Management Engine, which disables Intel Active
Management Technology and all underlying Intel ME technologies. This option also disables ME functions
that allow for ME
firmware
updates. It is suggested to periodically enable this option to update ME
firmware,
as the ME
firmware
may contain platform stability
fixes.
42
Chapter 5
Computer Setup (F10) Utility