[mheathr]

(replying to the child post) The products are not the same if for no other reason than because one comes with the receiver and ordering the other product does not, and that the receiver is even required is not something that is apparent beforehand without research, so the buyer must understand that having the product work as expected will require purchasing either the receiver as a stand alone product or as the bundle which is distinguished by being labeled as "...for Windows."

Naively, I had expected beforehand that the controller to use 802.11(a|b|g|n|ac) or bluetooth and therefore not need another receiver provided that those protocols were already available on the PC, but in the case of the wireless Xbox 360 controller another component is necessary for better or worse.

Luckily, I researched the situation before purchasing another controller with its usage on the PC in mind, so I did not encounter a potential headache until the solution dawned upon me.

Hopefully the next generation PS4 or Xbox One wireless controllers work without taking up a port on the PC with a wireless receiver again.