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ASUS P7H55-M/USB3 Manual De Usuario

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Chapter 2: BIOS information
2-21
The USB Devices Enabled item shows the auto-detected values. If no USB device is 
detected, the item shows None.
USB Functions [Enabled]
Enables or disables the USB Host Controllers. Configuration options: [Enabled] [Disabled]
The following items appear only when you set USB Support to [Enabled].
Legacy USB Support [Auto]
[Disabled] 
Disables the function.
[Enabled] 
Enables the support for USB devices on legacy operating systems (OS).
[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.
BIOS EHCI Hand-off [Enabled]
[Disabled] 
Disables the function.
[Enabled] 
Enables the support for operating systems without an EHCI hand-off  
 
feature.
USB Mass Storage Device Configuration 
USB Mass Storage Reset Delay [20 Sec]
Allows you to set the maximum time that the BIOS waits for the USB storage device to 
initialize. Configuration options: [10 sec] [20 sec] [30 sec] [40 sec]
Emulation Type [Auto]
Allows you to set the emulation type. Configuration options: [Auto] [Floppy] [Forced FDD] 
[Hard Disk] [CDROM]
2.5.4 
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.
EPP Version [1.9]
Appears only when the Parallel Port Mode is set to [EPP] or [ECP & EPP].  
Configuration options: [1.9] [1.7] 
Parallel Port IRQ [IRQ7]
Allows you to select parallel port IRQ. Configuration options: [IRQ5] [IRQ7]