Asus M2N68 SE User Manual - Page 53

USB Configuration

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Plug and Play O/S [No] When set to [No], BIOS configures all the devices in the system. 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. Configuration options: [No] [Yes] PCI Latency Timer [64] Allows you to select the value in units of PCI clocks for the PCI device latency timer register. Configuration options: [32] [64] [96] [128] [160] [192] [224] [248] Allocate IRQ to PCI VGA [Yes] When set to [Yes], BIOS assigns an IRQ to PCI VGA card if the card requests for an IRQ. When set to [No], BIOS does not assign an IRQ to the PCI VGA card even if requested. Configuration options: [Yes] [No] Palette Snooping [Disabled] When set to [Enabled], the palete snooping feature informs the PCI devices that an ISA graphics device is installed in the system so that the latter can function correctly. Configuration options: [Disabled] [Enabled] IRQ-xx assigned to [PCI Device] When set to [PCI Device], the specific IRQ is free for use of PCI/PnP devices. When set to [Reserved], the IRQ is reserved for legacy ISA devices. Configuration options: [PCI Device] [Reserved] 2.4.6 USB Configuration The items in this menu allows you to change the USB-related features. Select an item then press to display the configuration options. The Module Version and USB Devices Enabled items show the auto-detected values. If no USB device is detected, the item shows None. USB 1.1 Controller [Enabled] Allows you to enable or disable the USB 1.1 Controller. Configuration options: [Enabled] [Disabled] USB 2.0 Controller [Enabled] Allows you to enable or disable the USB 2.0 Controller. Configuration options: [Enabled] [Disabled] Legacy USB Support [Enabled] Allows you to enable or disable support for USB devices on legacy operating systems (OS). Setting to 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. Configuration options: [Disabled] [Enabled] [Auto] USB 2.0 Controller Mode [HiSpeed] Allows you to configure the USB 2.0 controller in HiSpeed (480 Mbps) or Full Speed (12 Mbps). Configuration options: [FullSpeed] [HiSpeed] Chapter 2: BIOS setup 2-17

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Chapter 2: BIOS setup
2-17
Plug and Play O/S [No]
When set to
[No]
, BIOS configures all the devices in the system. 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.
Configuration options: [No] [Yes]
PCI Latency Timer [64]
Allows you to select the value in units of PCI clocks for the PCI device latency timer register.
Configuration options: [32] [64] [96] [128] [160] [192] [224] [248]
Allocate IRQ to PCI VGA [Yes]
When set to
[Yes]
, BIOS assigns an IRQ to PCI VGA card if the card requests for an IRQ.
When set to
[No]
, BIOS does not assign an IRQ to the PCI VGA card even if requested.
Configuration options: [Yes] [No]
Palette Snooping [Disabled]
When set to
[Enabled]
, the palete snooping feature informs the PCI devices that an
ISA graphics device is installed in the system so that the latter can function correctly.
Configuration options: [Disabled] [Enabled]
IRQ-xx assigned to [PCI Device]
When set to
[PCI Device]
, the specific IRQ is free for use of PCI/PnP devices. When set to
[Reserved]
, the IRQ is reserved for legacy ISA devices.
Configuration options: [PCI Device] [Reserved]
2.4.6
USB Configuration
The items in this menu allows you to change the USB-related features. Select an item then
press
<Enter>
to display the configuration options.
The Module Version and USB Devices Enabled items show the
auto-detected values. If no USB device is detected, the item shows
None
.
USB 1.1 Controller [Enabled]
Allows you to enable or disable the USB 1.1 Controller.
Configuration options: [Enabled] [Disabled]
USB 2.0 Controller [Enabled]
Allows you to enable or disable the USB 2.0 Controller.
Configuration options: [Enabled] [Disabled]
Legacy USB Support [Enabled]
Allows you to enable or disable support for USB devices on legacy operating systems
(OS). Setting to 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.
Configuration options: [Disabled] [Enabled] [Auto]
USB 2.0 Controller Mode [HiSpeed]
Allows you to configure the USB 2.0 controller in HiSpeed (480 Mbps) or Full Speed (12
Mbps). Configuration options: [FullSpeed] [HiSpeed]