USB Human Interface Device support
uhidev* at uhub?
uhid* at uhidev?
ukbd* at uhidev?
ums* at uhidev?
driver handles all Human Interface Devices.
Each HID device can have several components, e.g., a keyboard and a mouse.
These components use different report identifiers (a byte) to distinguish
which one data is coming from. The
other drivers attached that handle particular kinds of devices and
only dispatches data to them based on the
driver appeared in OpenBSD