Legacy usb support [auto, Usb 2.0 controller mode [hispeed, Bios ehci hand-off [enabled – Asus P5Q-EM DO User Manual

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Chapter 2: BIOS setup

Legacy USB Support [Auto]

Allows you to enable or disable the support for legacy USB devices. 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 set the USB 2.0 controller mode to HiSpeed (480 Mbps) or FullSpeed (12

Mbps).

Configuration options: [FullSpeed] [HiSpeed]

BIOS EHCI Hand-off [Enabled]

Allows you to enable the support for operating systems without an EHCI hand-off feature.

Configuration options: [Disabled] [Enabled]

2.5.5

PCIPnP

The PCIPnP menu items allow you to change the advanced settings for PCI/PnP devices.

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]

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

BIOS SETUP UTILITY

Advanced

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