9 USB Interfaces
Kontron User's Guide EPIC/CE
30
9.2.1
Limitations of USB Ports 4 and 5
The power contacts for USB devices on Pin 1 and Pin 4 are not protected. They are suitable to supply
connected USB devices with a maximum of 500mA power dissipation. Do not supply external USB devices
with higher power dissipation through these pins. Always use a fuse when powering external USB
devices through these pins, otherwise a defective USB device may damage the EPIC/CE. Kontron
recommends using a resettable fuse, which follows the USB 1.1 specification, for power on external USB
connectors.
9.3
Configuration
You can enable or disable the three USB UHCI Host Controllers in the BIOS Setup Utility for support of
USB 1.1 devices. USB Host Controller 1 serves the two USB Ports 0 and 1 on the front. USB host
Controller 2 serves the USB Ports 2 and 3 on the front. USB Controller 3 only needs to be enabled for the
use of two more internal ports.
For high-speed USB 2.0 support of all 6 available ports, enable the USB EHCI Host Controller.
You also can enable or disable the legacy USB support. Legacy support is required for a USB keyboard
and a USB Mouse when used with non USB aware operating systems such as Unix or DOS. It also is
required to boot from USB mass storage devices. For more information, see the I/O Device Configuration
Submenu section in Appendix B: BIOS Operation.
You can download available drivers or get driver download support information from the Kontron Web
site. Kontron offers the latest Kontron-tested drivers, which can differ from newer ones. For further
technical questions, contact your local support or get support information and downloadable software
updates from Intel®.
Notes
: 1.Some operating systems without USB 2.0 support do not work well with EHCI controller enabled. If you
install such an OS at the EPIC/CE please disable the EHCI controller in the Setup Utility before installation.
2.For operating systems not listed on our Web site please contact your OS distributor for an USB 2.0 driver.
We are not allowed by law to ship USB 2.0 drivers.
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