I was looking to buy a headset or mic for voice chat and mentioned to the store clerk that I was on a Mac. I didn't want some device that came with PC drivers or some other nonsense. The clerk told me that the mic I chose should work but he couldn't be sure because Apple always does stuff to force you to use as many of their products as possible. While that's true in some cases where they've changed designs on iDevices that made old headphones or headsets useless, for example, what he said specifically seemed like total BS. He claims that Apple "reverses the polarity" on their audio ports and devices just to force people to upgrade to new accessories or Apple-specific products. I have no idea how to confirm that. Does anyone know if there's any truth to what he said?