User Manual
2-24Chapter 2: BIOS information
2.6.6 Network Stack Conguration
Network Stack [Disabled]
This item allows user to disable or enable the UEFI network stack. Conguration options:
[Disabled] [Enabled]
The following two items appear only when you set the previous item to [Enabled].
Ipv4 / Ipv6 PXE Support [Enabled]
This item allows you to enable or disable the Ipv4/Ipv6 PXE wake event. Conguration
options: [Disable Link] [Enabled]
2.6.7 HDD/SSD SMART Information
This menu displays the SMART information of the connected devices.
NVM Express devices do not support SMART information.
2.6.8 USB Conguration
The items in this menu allow you to change the USB‑related features.
The USB Devices item shows the auto‑detected values. If no USB device is detected, the
item shows None.
Legacy USB Support [Enabled]
[Enabled] Enables the support for USB devices on legacy operating systems (OS).
[Disabled] The USB devices can be used only for the BIOS setup program.
[Auto] Allows the system to detect the presence of USB devices at startup. If
detected, the USB controller legacy mode is enabled. If no USB device is
detected, the legacy USB support is disabled.
EHCI Hand-off [Enabled]
[Enabled] Enables the support for operating systems without an EHCI hand‑off
feature.
[Disabled] Disables the function.
USB Device Enable [Enabled]
Allows you to enable or disable all USB ports. Conguration options: [Disabled] [Enabled]
USB Single Port Control
Allows you to enable/disable individual USB ports.