Copyright © 2021 NEXCOM International Co., Ltd. All Rights Reserved.
46
AIEdge-X
®
500 User Manual
Chapter 4: BIOS Setup
Advanced
Version 2.20.1275. Copyright (C) 2020 American Megatrends, Inc.
Aptio Setup Utility - Copyright (C) 2020 American Megatrends, Inc.
→←: Select Screen
↑↓: Select Item
Enter: Select
+/-: Change Opt.
F1: General Help
F2: Previous Values
F3: Optimized Defaults
F4: Save & Exit
ESC: Exit
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.
USB Configuration
USB Module Version
USB Controllers:
1 XHCI
USB Devices:
1 Keyboard
Legacy USB Support
XHCI Hand-off
USB Mass Storage Driver Support
USB hardware delays and time-outs:
USB transfer time-out
Device reset time-out
Device power-up delay
23
[Enabled]
[Disabled]
[Enabled]
[20 sec]
[20 sec]
[Auto]
Legacy USB Support
Enable Enables Legacy USB.
Auto
Disables support for Legacy when no USB devices are connected.
Disable Keeps USB devices available only for EFI applications.
XHCI Hand-off
This is a workaround for OSs that does not support XHCI hand-off. The
XHCI ownership change should be claimed by the XHCI driver.
USB Configuration
This section is used to configure the USB.
USB Mass Storage Driver Support
Enables or disables USB mass storage driver support.
USB transfer time-out
The time-out value for control, bulk, and interrupt transfers.
Device reset time-out
Selects the USB mass storage device’s start unit command timeout.
Device power-up delay
Maximum time the value will take before it properly reports itself to the Host
Controller. “Auto” uses default value: for a Root port it is 100 ms, for a Hub
port the delay is taken from Hub descriptor.