#2
its just a certain type of chord that you plug in to you computer pretty much, you should have one id imgaine
#4
Good ol Google:

this is the larger, 6-pin socket



and this is the smaller, 4-pin found on laptops, which wont supply bus-power

#5
as the pics show in the post, those are firewire ports.
Make sure you don't run Vista as the Satellite wont work on that OS.

6 pin firewire (large connections) transmit power down the cable to power hardware.
4 pin firewire (smaller connections) don't transmit power but you can normally plug in hardware to the wall and use it as so.
Both have the same data rate and don't effect audio any differently.