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 :)

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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.

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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