Avalue EQM-A50M - Manual (Page 25)

User ’s Manual
EQM-A50M User ’s Manual 25
3.6.2.5 USB Configuration
The USB configuration menu is used to read USB configuration information and configure
USB.
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 will keep USB
devices available only for EFI applications.
ECHI Hand-off
Enabled
Disabled[Default]
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[Default]
The time-out value for Control, Bulk, and Interrupt
transfers.
Device reset time-out
10sec / 20sec[Default]
30sec / 40sec
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 100ms, for a Hub
port the delay is taken from Hub descriptor.
Mass Storage Devices
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.
Generic Ultra
HS-COMBO
Generic Ultra HS-COMBO is onboard SSD.