HP ProDesk 400 G4 Maintenance And Service Manual page 60

Table 5-3 Computer Setup—Advanced (for advanced users) (continued)
Option
Port Options
Option ROM Launch
Policy
Power Management
Options
52 Chapter 5 Computer Setup (F10) Utility
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Lets you disable the following ports (default is enabled):
Serial Port A (rear port optional component)
SATA 0
Front USB ports - front USB port 1 is the USB Type-C port.
Rear USB ports
USB Legacy Port Charging - enables USB charging port capability when the system is in hibernate or
shutdown state. Supported by the right front USB port.
Rear USB Type-C Downstream Charging - enables USB charging port capability when the system is in
hibernate or shutdown state. Rear panel optional component.
Front USB Type-C Downstream Charging - enables USB charging port capability when the system is in
hibernate or shutdown state.
These policies control whether Legacy Option ROMs or UEFI drivers are loaded. Default is 'All UEFI' for
Windows 10 or later.
Configure Option ROM Launch Policy
● All legacy
● All UEFI
● All UEFI except video
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.
S5 Maximum Power Savings (enable/disable)
Enabling this feature reduces the power of the system as much as possible in the S5 state. Power is
removed from the wake up circuitry, the expansion slots, and any management features while in S5.
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 10 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.