The modmic has their own little sticker that is stuck to the outside of the mic. That's what the modmic attaches to. If you have the wireless one, that's that. If you have the wired one, the 3.5mm jack goes into your PC, not into the QC35s. So it doesn't matter what kind of plug the QC35s have.

I actually have both a wired (very old, wire kind of broken because I treated it poorly) and a wireless modmic, and both work fine with my QC35s.