Avalue Technology EBM-A50M, User Manual, Page: 53 / 79

User
’s Manual
EBM-A50M User
‟s Manual
53
3.6.2.6 USB Configuration
The USB configuration menu is used to read USB configuration information and configure
USB.
Item Options Description
Legacy USB support
Enabled
Disabled
Auto
Enables Legacy USB support.
AUTO disables legacy support if no USB
devices are connected. DISABLE will keep
USB devices available only for EFI
applications.
ECHI hand-off
Enabled
Disabled
This is a workaround for OSes without EHCI
hand-off support. The EHCI ownership change
should be claimed by EHCI driver.
USB transfer time-out
1sec / 5sec
10sec / 20sec
The time-out value for Control, Bulk, and
Interrupt transfers.
Device reset time-out
10sec / 20sec
30sec / 40sec
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
100ms, for a Hub port the delay is taken from
Hub descriptor.
Device power-up delay in
seconds
1~40
Delay range is 1~40 seconds, in one second
increments.
Generic Storage Device 0.00
Auto
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.