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2016
congatec
AG
ICSLm13.indd
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8.4.26
USB Submenu
Feature
Options
Description
USB Controllers
No option
Displays the number of enabled EHCI (USB2.0) and xHCI (USB3.0) controllers.
USB Devices
No option
Displays the detected USB devices.
Overcurrent Protection
Disabled
Enabled
Disable or enable over-current protection on all USB ports.
Legacy USB Support
Enabled
Disabled
Auto
Disable this feature to keep USB devices available for EFI applications and BIOS setup only.
Select ‘Auto’ to disable legacy support if no USB devices are connected.
xHCI Hand-off
Enabled
Disabled
This feature is a workaround for operating system without xHCI hand-off support.
Note:
If this feature is enabled, the xHCI ownership change should be claimed by the xHCI operating system driver.
USB Mass Storage Driver Support Disabled
Enabled
Enable or disable USB mass storage driver support.
USB Transfer Timeout
1 sec
5 sec
10 sec
20 sec
Select the timeout value for control, bulk, and interrupt transfers.
Device Reset Timeout
10 sec
20 sec
30 sec
40 sec
Select the USB mass storage device Start Unit command timeout.
Device Power-up Delay Selection
Auto
Manual
‘Manual’ - Set maximum time a USB device requires to report itself to the host controller.
‘Auto’ - Sets maximum time a USB device requires to report itself to the host controller to 100ms for a root port or
derives the value from the hub descriptor of a hub port.
USB Mass Storage Device Name
(Auto detected USB mass
storage devices are listed here
dynamically)
Auto
Floppy
Forced FDD
Hard Disk
CD-ROM
Select the emulation type for each USB mass storge device:
1
‘AUTO’ - Lets the BIOS auto detect the current formatted media.
‘Floppy’ - Emulates the device as a floppy drive.
‘Forced FDD’ - Allows a HDD to be connected as a floppy image.
2
‘Hard Disk’ - Allows the hard disk to be emulated as a HDD.
‘CD-ROM’ - Assumes the CD-ROM is formatted as a bootable media.
3
Notes:
1
The device’s formatted type and the emulation type provided by the BIOS must match for the device to boot properly.
2
The drive must be formatted with FAT12, FAT16 or FAT32.
3
As specified by the ‘El Torito’ Format Specification
