Say Y here if you want full HID support to connect USB keyboards,
mice, joysticks, graphic tablets, or any other HID based devices
to your computer via USB, as well as Uninterruptible Power Supply
(UPS) and monitor control devices.

You can't use this driver and the HIDBP (Boot Protocol) keyboard
and mouse drivers at the same time. More information is available:
Documentation/input/input.txt.

If unsure, say Y.

To compile this driver as a module, choose M here: the
module will be called usbhid.

source code:

drivers/hid/usbhid/