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BIOS Setup
MI988
User’s Manual
47
4
4.4.12 USB Configuration
BIOS Setting
Description
Legacy USB Support
Enables Legacy USB support.
•
Auto
disables legacy support if there is no
USB device connected.
•
Disable
keeps USB devices available only
for EFI applications.
XHCI Hand-off
This is a workaround for OSes without XHCI
hand-off support. The XHCI ownership change
should be claimed by XHCI driver.
USB Mass Storage
Driver Support
Enables / Disables the support for USB mass
storage driver.
USB Transfer time-
out
The time-out value for control, bulk, and
Interrupt transfers.
Options: 1 sec / 5 sec / 10 sec / 20 sec
Device reset time-out
Seconds of delaying execution of start unit
command to USB mass storage device.
Options: 10 sec / 20 sec / 30 sec / 40 sec
Device power-up
delay
The maximum time the device will take before
it properly reports itself to the Host Controller.
Auto
uses default value for a Root port it is
100ms. But for a Hub port, the delay is taken
from Hub descriptor.
Options: Auto / Manual
Summary of Contents for MI988
Page 1: ...MI988 AMD Ryzen Embedded V1000 Mini ITX Motherboard User s Manual Version 1 0 July 2018...
Page 14: ...6 MI988 User s Manual 1 6 Block Diagram...
Page 17: ...General Information MI988 User s Manual 9 1 1 8 Dimensions...
Page 18: ...10 MI988 User s Manual This page is intentionally left blank...
Page 22: ...14 MI988 User s Manual 2 3 Jumper Connector Locations on MI988...
Page 38: ...30 MI988 User s Manual This page is intentionally left blank...