Avalue EMX-H61B - Manual (Page 32)

EMX-H61B User ’s Manual
32 EMX-H61B User’s Manual
3.6.2.3 USB Legacy Features
Item Options Description
Legacy USB Support
Enabled[Default]
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.
EHCI Hand-off
Disabled[Default]
Enabled
This is a workaround for OSes without EHCI
hand-off support. The EHCI ownership change
should be claimed by EHCI driver.
Port 60/64 Emulation
Disabled
Enabled[Default]
Enables I/O port 60h/64h emulation support.
This should be enabled for the complete USB
keyboard legacy support for non-USB aware
OSes.
USB transfer time-out
1 sec
5 sec
10 sec
20 sec[Default]
The time-out value for Control, Bulk, and
Interrupt transfers.
Device reset time-out
10 sec
20 sec[Default]
30 sec
40 sec
USB mass storage device Start Unit command
time-out.
Device power-up delay
Auto[Default]
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.
SanDisk Extreme 0001
Auto[Default]
Floppy
Forced FDD
Hard Disk
CD-ROM
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.