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1 What:           For USB devices : /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/report_descriptor
2                 For BT devices  : /sys/class/bluetooth/hci<addr>/<hid-bus>:<vendor-id>:<product-id>.<num>/report_descriptor
3                 Symlink         : /sys/class/hidraw/hidraw<num>/device/report_descriptor
4 Date:           Jan 2011
5 KernelVersion:  2.0.39
6 Contact:        Alan Ott <alan@signal11.us>
7 Description:    When read, this file returns the device's raw binary HID
8                 report descriptor.
9                 This file cannot be written.
10 Users:          HIDAPI library (http://www.signal11.us/oss/hidapi)
11
12 What:           For USB devices : /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/country
13                 For BT devices  : /sys/class/bluetooth/hci<addr>/<hid-bus>:<vendor-id>:<product-id>.<num>/country
14                 Symlink         : /sys/class/hidraw/hidraw<num>/device/country
15 Date:           February 2015
16 KernelVersion:  3.19
17 Contact:        Olivier Gay <ogay@logitech.com>
18 Description:    When read, this file returns the hex integer value in ASCII
19                 of the device's HID country code (e.g. 21 for US).
20                 This file cannot be written.