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USB Host Controller

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The host controller is a hardware component that is contained within the host computer. The host controller converts data between the format that is used by the host computer and the USB physical format. You only need to write a USB host controller driver if you are building a platform with host controller hardware that does not conform to either the UHCI or the OHCI specifications.

See Also

USB Driver Architecture | USB Topology | USB Transfer Types | USB Devices | USB System Software

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