Usb Configuration - Nexcom NDiS 127 User Manual

Chapter 4: BIOS Setup

USB Configuration

This section is used to enable or disable the USB controller.
Aptio Setup Utility - Copyright (C) 2010 American Megatrends, Inc.
Advanced
USB Configuration
USB Devices:
1 Keyboard
Legacy USB Support
EHCI Hand-off
USB hardware delays and time outs:
USB transfer time-out
Device reset time-out
Device power-up delay
Version 2.10.1208 Copyright (C) 2010 American Megatrends, Inc.
Copyright © 2012 NEXCOM International Co., Ltd. All Rights Reserved.
Enables legacy USB support.
Auto option disables legacy
support if no USB devices are
connected. DISABLE option
will keep USB devices avail-
able only for EFI applications
[Enabled]
[Disabled]
[Auto]
[Auto]
← → Select Screen
[Auto]
↑↓ Select Item
+ - Change Opt.
F1 General Help
F7 Previous Values
F10 Save and Exit
ESC Exit
Legacy USB Support
Enables legacy USB support. Auto option disables legacy support if no USB
devices are connected. DISABLE option will keep USB devices available only
for EFI applications
EHCI Hand-off
This section is a workaround for OSes without EHCI hand-off support. The
EHCI ownership change should be claimed by EHCI driver.
USB transfer time-out
The time-out value for control, Bulk, and Interrupt transfers.
Device reset time-out
USB mass storage device start unit command time-out.
Device power-up delay
Maximum time the device will take before it properly reports it self to the
Host Controller. 'Auto' uses default value; for a Root port it is 100 ms, for
a Hub port the delay is taken form Hub descriptor.
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NDiS 127 User Manual