5 usb, 1 usb > chipset usb configuration – ADLINK ETX-BT User Manual
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Page 58
9.3.5
USB
Feature
Options
Description
USB Info
only
USB Module Version
Info only
USB Devices
Info only
X drive, x keyboards, x mouse, x hubs
Legacy USB Support
Enabled 
Disabled 
Auto 
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 and setup.
XHCI Hand-off
Enabled 
Disabled 
This is a workaround for OSes without XHCI hand-off support.
The XHCI ownership change should be claimed by the XHCI
OS driver.
EHCI Hand-off
Enabled 
Disabled 
This is a workaround for OSes without EHCI hand-off support.
The EHCI ownership change should be claimed by the EHCI 
OS driver. 
USB Mass Storage Driver Support
Enabled 
Disabled 
Enable/Disable USB Mass Storage Driver Support.
Chipset USB Configuration
Submenu
USB hardware delays and time-outs:
Info only
USB transfer time-out
1 sec 
5 sec 
10 sec 
20 sec 
The time-out value for Control, Bulk, and Interrupt transfers
Device reset time-out
10 sec 
20 sec 
30 sec 
40 sec 
USB mass storage device Start Unit command time-out.
Device power-up delay
Auto 
Manual 
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 100 ms, for a Hub port the delay is taken from
Hub descriptor.
Mass Storage Devices
Info only
List current USB max storage device.
9.3.5.1 USB > Chipset USB Configuration
Feature
Options
Description
USB Configuration
Info only
XHCI Mode
Enabled 
Disabled 
Auto 
Smart Auto 
Mode of operation of xHCI controller.
USB 2.0(EHCI) Support
Disabled 
Enabled 
Control the USB EHCI (USB 2.0) functions. One EHCI 
controller must always be enabled.