Avalue Technology ESM-EHLC User Manual page 56

ESM-EHLC User's Manual
Item
Legacy USB Support
XHCI Hand-off
USB Mass Storage Driver Support
USB transfer time-out
Device reset time-out
Device power-up delay
Mass Storage Devices
56 ESM-EHLC User's Manual
Options
Enabled[Default]
Disabled
Auto
Enabled[Default]
Disabled
Enabled[Default]
Disabled
1 sec
5 sec
10 sec
20 sec[Default]
10 sec
20 sec[Default]
30 sec
40 sec
Auto[Default]
Manual
Auto[Default]
Floppy
Forced FDD
Hard Disk
CD-ROM
Description
Enables Legacy USB support. AUTO option
disables legacy support if no SUB devices are
connected. DISABLE option will keep USB
devices available only for EFI applications.
This is a workaround for OSes without XHCI
hand-off support. The XHCI ownership change
should be claimed by XHCI driver.
Enable/Disable USB Mass Storage Driver
Support.
The time-out value for Control, Bulk, and
Interrupt transfers.
USB mass storage device Start Unit command
time-out.
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, for a Hub port the delay is taken form
Hub descriptor.
Mass storage device emulation type. 'AUTO'
enumerates devices according to their media
format. Optical drives are emulated as
'CDROM', drives with no media will be
emulated according to a drive type.