Apple Magic Keyboard w/ numeric pad - Windows 10 - Function Keys Not Working

I renamed it on my mac to match the others, hoping that it would help. It didn't.

Connected via cable it reads "magic keyboard with numeric pad"

Without any apple keyboards attached, the "keyboard" tab on the BCCP disappears.

Hence the, it's not registering as an apple keyboard.

They're both connected through a USB cable.

The new one is on the left, old is on the right.

If there was a way to change the one of the left to match the one on the right, I would. Same keyboard layout, except the left one is BT.

The keys work on os x, but not on windows.

No, I just bought the keyboard a few days ago but they never worked on windows; Buy Magic Keyboard with Numeric Keypad for Mac in Silver - Apple

I had the old wired one before which did work.

Right now I'm using two keyboards- the old and the new one. I already tried removing both from the control panel/etc and then only pairing the new keyboard, but that did not work either. I also tried reinstalling the drivers- no luck.

No, the numeric pad is fine.

I'm talking about the function keys like volume up/down brightness etc.

Those worked on the old wired keyboard and they work on the one without the numeric pad (the small one)

I've tried just about everything.

Bootcamp isn't registering it as an apple keyboard, instead it registers as a generic one.

I'm guessing apple hasn't bothered to update their drivers?

It's the same thing