What is a USB Device GUID and What does it mean

See this Registry key:

[HKEY_CURRENT_USER\System\CurrentControlSet\Control\MediaProperties\PrivateProperties\DirectInput\VID_0079&PID_0011\Calibration\0] "GUID"=hex:e0,fa,66,14,00,b3,e0,11,80,01,44,开发者_运维百科45,53,54,00,00

As you can see there is a GUID key for this Device, and it contains some Hex codes. I want to know what is GUID and what does it mean really, which info does it give me and any other important info about it.

Any Help Really Appreciated :)

You'd have to ask DragonRise Inc. It's their gamepad. There is no global overarching documentation for the data that each individual company stores in the registry.

As far as I've been able to dig up in various locations, you are looking at a Device GUID

The term JoystickGUID is a stable 128-bit identifier for a joystick device that does not change over time, it identifies class of the device (a X360 wired controller for example). This identifier is platform dependent.

Looking at other references gives a bit more information, Joystick:getGUID