Heres the problem. I have a MX Revolution mouse, external hard drive, Camera that uses USB cord, and a few flash drives. My Macbook Pro only has 2 USB ports. I have my mouse/external hdd plugged in and operating all the time now. Sometimes I need to upload pictures/get files off my flash drive/sync iPod, and I have to unplug my external drive or mouse to be able to do this. If I had just ONE more USB port, it would make things a whole lot easier. Now this summer I plan on buying an external monitor which means I need a keyboard as well. So, what should I do? Get a Wired Apple keyboard (would the USB port on it power my external drive), get a USB hub (same question), or something else? Thanks. Also is it OK if I do leave my external HDD on 24/7?