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where is usb.h?

Red-faced question:

There is a Perl package, libdevice-usb-perl, in which C code is
"inlined" (using Perl package libinline-c-perl). The first statement
of the inlined C code is
  #include <usb.h>

The query
shows many results, even for the AMD arch needed.

Is one of these the included file? Or is it somewhere else?

Thank you.