Asus P7H55-M SI - Manual (Page 42)

2-14 Chapter 2: BIOS information
USB Functions [Enabled]
Allows you to disable or enable the USB functions. Configuration options: [Disabled]
[Enabled]
Legacy USB Support [Auto]
Allows you to enable or disable support for Legacy USB storage devices, including USB
flash drives and USB hard drives. 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]
BIOS EHCI Hand-off [Enabled]
Allows you to enable or disable the BIOS EHCI Hand-off function.
Configuration options: [Disabled] [Enabled]
2.4.5 PCI PnP
The PCI PnP menu items allow you to change the advanced settings for PCI/PnP devices.
The menu includes setting IRQ and DMA channel resources for either PCI/PnP or legacy ISA
devices, and setting the memory size block for legacy ISA devices.
Take caution when changing the settings of the PCI PnP menu items. Incorrect field values
can cause the system to malfunction.
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]
The Module Version and USB Devices Enabled items show the auto-detected values. If no
USB device is detected, the item shows None.
2.4.4 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.