Just got the time capsule, going to use it for wireless time machine back ups of my laptop. I would also like to connect an external drive to the time capsule for movies and audio files that are too big for my laptop. I notice if I connect my owc 7200 rpm external drive via the USB port to the time capsule, things are a bit sluggish when I access movie/audio files over the wireless...What if I purchased an external drive with an ethernet port? would it work if I plugged it into the time capsule? and if so would there be a speed increase?