In CPAN description of Device::USB there is a constant CLASS_HID defined, which looks promising, but no more description about how to use it.

Look at the other documentation :) the real documentation :) the libusb documentation :) Device::USB::FAQ says you can get it from http://libusb.sourceforge.net/ ( http://www.libusb.org/ )

HID site:http://libusb.sourceforge.net/api-1.0/ says LIBUSB_CLASS_HID Human Interface Device class.

libusb piano says Linux ALSA MIDI driver for Dream Cheeky/Dream Link USB Roll-Up Piano

So, study the usbpiano driver :) for what to do with Device::USB :)