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USB Features Submenu of the Advanced Menu
The USB Features Submenu allows for the enabling or disabling of SCSI SubClass support, thus enabling support for
USB mass storage devices that belong to the SCSI SubClass. Examples of such devices include USB memory keys and
floppy drives.
Figure 10. USB Features Submenu
Table 10: Fields, Options and Defaults for the USB Features Submenu of the Advanced Menu
Menu Field Options Default Description
Legacy USB
Support:
• Disabled
• Enabled
[Enabled] When Enabled is selected, Legacy USB Emulation is
enabled and USB devices are available without a USB-
aware OS. When Disabled is selected, Legacy USB Emula-
tion is disabled.
SCSI SubClass
Support:
• Disabled
• Enabled
[Enabled] When Enabled is selected, USB devices that belong to the
SCSI subclass in the mass storage class (e.g., USB Memory
Key) are enabled. Note that enabling this feature may
cause the system to hang during POST, depending on the
device that is connected.
F1 Help
ESC Exit
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Select Menu
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Enter
F9 Setup Defaults
F10 Save and Exit
Change Values
Select Sub-Menu
▲
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Item Specific Help
[Disabled]
The feature is disabled.
[Enabled]
Legacy USB Emulation
is enabled, and USB
devices are available
without USB-aware OS.
USB Features
PhoenixBIOS Setup Utility
Legacy USB Support:
SCSI SubClass Support: [Enabled]
[Enabled]
Advanced Menu