The stack supports the three industry-standard HCI types:
Open Host Controller Interface (OHCI)
Universal Host Controller Interface (UHCI)
Enhanced Host Controller Interface (EHCI)
We provide separate servers for each type
(devu-ohci.so,
devu-uhci.so,
and
devu-ehci.so).
Note that USB devices don't care whether a computer has an OHCI, UHCI,
or an EHCI controller.