BIOS Setup Utility 17
USB Features Submenu 2
Options for the USB Features submenu are given in Table 2-8.
Table 2-9. USB Features Submenu Options
Option Settings Description
Legacy USB
Support:
Disabled
Enabled
This option enables or disables Legacy USB emulation.
When [Disabled] is selected, Legacy USB support is disabled.
When [Enabled] is selected, Legacy USB support is enabled, and certain USB
devices (such as CD-ROMs and keyboards) can be used without a USB-aware
operating system.
SCSI
SubClass
Support:
Disabled
Enabled
This option enables or disables support for USB devices that belong to the SCSI
subclass in the Mass Storage class (e.g., USB CD-ROM). Note that this option is
visible but disabled if Legacy USB Support is disabled.
When [Disabled] is selected, the feature is disabled.
When [Enabled] is selected, USB devices that belong to the SCSI subclass in the
Mass Storage class can be used. Note that enabling this feature could cause the
system to hang during POST, depending upon the device that is connected
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PhoenixBIOS Setup Utility
[Disabled]
The feature is disabled.
[Enabled]
Legacy USB Emulation
is enabled and USB
devices are available
without USB aware OS.
USB Features
Legacy USB Support: [Enabled]
SCSI SubClass Support: [Enabled]
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