Probably a stupid question

I am wondering about the pc flighting Right now I am signed up for console but I do have a pc and would like to take part in those flights as well but I can’t use a keyboard without looking at the keys so I am wondering if I can use controller on PC or in the PC words game pad as I will probably do the same thing I do with every PC game that supports game pad plug in my Xbox elite series to via USB to my PC

You can definitely hook up your xbox controller with usb and use it to play Halo. Just let it know in the pc signup page what kind of devices you use and check anything that you have lying around.
Don’t forget to upload a dxdiag as well so 343 knows your specs.

If you have any questions let me know!