>>722909748
I don't think you understand.
He's asking if the extra buttons show up as assignable inputs in Steam Input.
Most PC-compatible game controllers just use XInput, which was specifically designed for the Xbox 360 controller, and only supports exactly as many inputs as the Xbox 360 controller. That means two sticks (with stick buttons), two triggers, two shoulder buttons, one d-pad, two menu buttons and four face buttons. And that's it. Even if a controller has more buttons than that, games can't see them. Those extra buttons can be assigned, either using the controller's own UI, or through third-party software, to mimic any of the XInput signals mentioned above, but they can't do anything more than that.
Some third-party controllers, however, support DirectInput, an older, more flexible and more complex standard, allowing those extra buttons to be detected and used by games and software, such as Steam Input. Some 8bitdo controllers, for example, let you assign the extra shoulder and paddle buttons in Steam Input, allowing for per-game customization. Some games even have fully native Steam Input support, allowing for those extra buttons to be assigned to functions in-game.
This is also what the Playstation DualSense controller does. It shows up as a DirectInput controller, and you can assign the touchpad inputs and such in games that natively support it, or abstract them through Steam Input. This also lets games tap into the onboard motion control sensors. Nintendo Switch Pro Controllers also show up in Steam Input, and allow their extra buttons and gyros to be used in-game.
Anyway,
>>722909582 is asking if that particular controller supports any of this, or if those extra C and Z buttons are just macro buttons that cannot be assigned to anything in Steam Input.