I'm sure I read somewhere that Microsoft have stopped producing Wireless Xbox 360 Receivers for PCs, but I can't remember where.
For anyone confused, I'm referring to these things:
I've searched around the internet but the only place I could find something similar was on Amazon: http://www.amazon.com/dp/B000HZFCT2/
But the reviews seem to agree that it's actually a fake, and not actually manufactured by Microsoft.
Does Microsoft still manufacture, sell (and support) these things?