> On my laptop I bought with firewire connection and noticed it only has an out,
The size of the connector has nothing to do with being an in or an out. The larger connector carries power while the smaller one does not. It makes sense that your laptop would not supply firewire w/power. All it means is any device which requires power via firewire (like the M-Audio FW410 or an external hard drive) would have to be plugged into AC power to work with your laptop. Since video cameras run on their own batteries, this shouldn’t be a problem.