hi, i have a black macbook, the one just prior to the new ones. I know it has a firewire port, think its 400 port, but not 100% sure. I need to buy an external hard drive for pro tools, so need to make sure if its firewire 400 or 800 port....... Anyone confirm please? Much thanks. Best to get a drive with its own power supply ? Or one that runs off the macbook? ..... both usb ports are being used already..... maybe a firewire drive running off macbook also would be a little too much for macbook to handle?