Chapter 3: BIOS Setup | 25
EIH81-IHP User’s Manual
SMART Self Test
This item runs SMART Self Test on all HDDs during POST.
Options: Disabled (Default) / Enabled
USB Configuration
XHCI Mode
The item selects Mode of operation of xHCI controller.
Options: Smart Auto (Default) / Auto / Enabled / Disabled / Manual
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Note: The following items appear only when you set the XHCI Mode to [Manual]
XHCI Pre-Boot Driver
The item allows you to enable or disable XHCI Pre-Boot Driver support.
Options: Enabled (Default) / Disabled
Legacy USB Support
This item determines if the BIOS should provide legacy support for USB devices like the
keyboard, mouse, and USB drive. This is a useful feature when using such USB devices with
operating systems that do not natively support USB (e.g. Microsoft DOS or Windows NT).
Options: Enabled (Default) / Disabled / Auto
USB Mass Storage Driver Support
The item allows you to enable or disable USB Mass Storage Driver Support.
Options: Enabled (Default) / Disabled
USB transfer time-out
The time-out value for Control, Bulk, and Interrupt transfers.
Options: 5 sec (Default) / 1 sec / 10 sec / 20 sec
Device reset time-out
The item sets USB mass storage device Start Unit command time-out.
Options: 10 sec (Default) / 20 sec / 30 sec / 40 sec
Device power-up delay
“Auto” uses default value: for a Root port it is 100ms, for a Hub port the delay is taken from
Hub descriptor.
Options: Auto (Default) / Manual
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Note: The following items appear only when you set the Device power-up delay to [Manual]