Asus M4A78T-E User Manual - Page 82

Plug And Play O/S [No], Legacy USB Support [Enabled], USB 2.0 Controller [Enabled], USB 2.0 - usb boot

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Page 82 highlights

Legacy USB Support [Enabled] [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. [Enabled] Enables the support for USB devices on legacy operating systems (OS). [Disabled] Disables the function. USB 2.0 Controller [Enabled] [Enabled] Enables the USB 2.0 controller. [Disabled] Disables the controller. The following two items appear only when you set the USB 2.0 Controller item to [Enabled]. USB 2.0 Controller Mode [HiSpeed] [FullSpeed] Sets the USB 2.0 controller mode to FullSpeed (12 Mbps). [HiSpeed] Sets the USB 2.0 controller mode to HiSpeed (480 Mbps). BIOS EHCI Hand-off [Enabled] [Enabled] Enables the support for operating systems without an EHCI hand‑off feature. [Disabled] Disables the function. 3.6.5 PCIPnP The PCIPnP menu items allow you to change the advanced settings for PCI/PnP devices. BIOS SETUP UTILITY Advanced Advanced PCI/PnP Settings WARNING: Setting wrong values in below sections may cause system to malfunction. Plug And Play O/S [No] NO: lets the BIOS configure all the devices in the system. YES: lets the operating system configure Plug and Play (PnP) devices not required for boot if your system has a Plug and Play operating system. Plug And Play O/S [No] [Yes] When set to [Yes] and if you install a Plug and Play operating system, the operating system configures the Plug and Play devices not required for boot. [No] When set to [No], BIOS configures all the devices in the system. Chapter 3 3-24 Chapter 3: BIOS setup

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3-24
Chapter 3: BIOS setup
Chapter 3
3.6.5
PCIPnP
The PCIPnP menu items allow you to change the advanced settings for PCI/PnP devices.
Advanced PCI/PnP Settings
WARNING: Setting wrong values in below sections
may cause system to malfunction.
Plug And Play O/S
[No]
NO: lets the BIOS
configure all the
devices in the system.
YES: lets the
operating system
configure Plug and
Play (PnP) devices not
required for boot if
your system has a Plug
and Play operating
system.
BIOS SETUP UTILITY
Advanced
Plug And Play O/S [No]
[Yes]
When set to [Yes] and if you install a Plug and Play operating system, the
operating system configures the Plug and Play devices not required for
boot.
[No]
When set to [No], BIOS configures all the devices in the system.
Legacy USB Support [Enabled]
[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.
[Enabled]
Enables the support for USB devices on legacy operating systems (OS).
[Disabled]
Disables the function.
USB 2.0 Controller [Enabled]
[Enabled]
Enables the USB 2.0 controller.
[Disabled]
Disables the controller.
The following two items appear only when you set the
USB 2.0 Controller
item to
[Enabled].
USB 2.0 Controller Mode [HiSpeed]
[FullSpeed]
Sets the USB 2.0 controller mode to FullSpeed (12 Mbps).
[HiSpeed]
Sets the USB 2.0 controller mode to HiSpeed (480 Mbps).
BIOS EHCI Hand-off [Enabled]
[Enabled]
Enables the support for operating systems without an EHCI hand-off
feature.
[Disabled]
Disables the function.