Asus Z170-AR Manual page 104

Fast Boot [Enabled]
[Disabled]
[Enabled]
The following items appear only when you set the Fast Boot to [Enabled].
SATA Support [HDD Only]
[All Sata Devices]
[HDD Only]
[Last Boot HDD Only]
USB Support [Partial Initial]
[Disabled]
[Full Initial]
[Partial Initial]
PS2 Devices Support [Enabled]
Allows you to enable or disable control of the PS2 devices' availability during POST.
Configuration options: [Enabled] [Disabled]
Network Stack Driver Support [Disabled]
[Disabled]
[Enabled]
Next Boot after AC Power Loss [Normal Boot]
[Normal Boot]
[Fast Boot]
DirectKey (DRCT) [Enabled]
[Disabled]
[Enabled]
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Allows your system to go back to its normal boot speed.
Allows your system to accelerate the boot speed.
All devices connected to SATA ports are available during
POST. This process extends the POST time.
Only hard drives connected to SATA ports are detected
during POST.
Only boot drives connected to a SATA ports are detected
during POST.
All USB devices will not be available until OS boot up for a
fastest POST time.
All USB devices will be available during POST. This process will
extend the POST time.
For a faster POST time, only USB ports with keyboard and
mouse connections will be detected.
Select to skip the network stack driver from loading during POST.
Select to load the network stack driver during POST.
Returns to normal boot on the next boot after an AC power loss.
Accelerates the boot speed on the next boot after an AC power loss.
Disables the DirectKey button. The system will only power on or off when
you press the DirectKey button.
Allows the system to power on and go to the BIOS Setup directly when you
press the Reset button. Connect the 2-pin connector of the chassis reset
buton cable to the onboard DRCT header.
Chapter 2: BIOS Setup