Table 4-2: legacy usb support – ADLINK MXC-4000 Series User Manual
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BIOS Settings and Driver Installation
4.1.2.7
USB Configuration
Legacy USB Support
Legacy USB Support also refers to USB mouse and keyboard
support. Normally if this option is not enabled, attached USB
mouse or keyboard will not be available until a USB compatible
operating system fully boots up with USB drivers loaded. With
this option enabled, attached USB mouse or keyboard is
usable even when no USB drivers loaded.
USB 2.0 Controller Mode
The USB 2.0 Controller Mode configures the data rate of the
USB port. Available options are FullSpeed (12 Mbps) and HiS-
peed (480 Mbps).
BIOS EHCI hand-off
This option provides a workaround for OSes without ECHI
hand-off support. The change of EHCI ownership should be
claimed by the EHCI driver.
USB Mass Storage Device Configuration
This is a submenu for configuring the USB Mass Storage Class
Devices which are in use on the USB ports found by BIOS.
Emulation Type can be set according to the type of attached
USB mass storage device(s). If set to Auto, USB devices less
than 530MB will be emulated as Floppy and those greater than
530MB will remain as hard drive. The Forced FDD option can
be used to force a hard disk type drive to boot as FDD (Ext. ZIP
Drive).
Option
Description
Disabled
Set this value to prevent the use of any USB device
during system boot or in DOS environment.
Enabled
Set this value to allow the use of USB devices dur-
ing system boot or in DOS environment.
Auto
This option automatically detects USB keyboard or
mouse and if found, allows the usage during system
boot or in DOS environment.
Table 4-2: Legacy USB Support