Okay, so I bought a MacBook a few weeks back, and I would really like to be able to use my External Hard drive with it, but still have the freedom to move my laptop around the house. I already have a huge external hard drive, that I don't want to go to waste because it stores 320GB which is farm more than I would ever use with music and movies . It'll last me ten years. I know these exist, I just don't know what they are called, it is a two part device that I can plug a small wireless receiver into my USB port, and the other part you plug all your USB storage devices in to and it links it to whatever computer you have your wireless receiver in. (I hope that made sense) Can someone tell me what they are called?