Advantech SOM-4463D-S8B2E User Manual page 28

3.2.2.15 USB Configuration
 Legacy USB Support
This item allows users to enable legacy USB support. The "Auto" option dis-
ables legacy support if no USB devices are connected.
 USB 2.0 Controller Mode
This item allows users to choose between hi-speed (480 Mbps) or full-speed (12
Mbps) mode.
 BIOS EHCI Hands Off
This item provides a workaround for operating systems without EHCI hands off
support. EHCI ownership change requests should be claimed by the EHCI
driver.
 Hotplug USB FDD Support
A dummy FDD device can be created and associated with a hot-plugged FDD.
The "Auto" option creates this dummy device only if no USB FDD is present.
SOM-4463 B2 User Manual
Figure 3.18 USB Configuration
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