Here is a short clip of the process with sound. You can always try if you are not sure. All connections follow standards including the connections for power. The power supply will contain several extra power connections and you can always purchase splitters. Each drive and the motherboard need to be hooked up to the power supply.
Communication cables run from the motherboard or expansion cards to the drives.
It is called random access because it is not sequential in nature like a cassette tape where you have to advance or reverse through songs to get to the one you want. It operates more like a CD disc where direct access to any song is possible. EDO RAM had been popular. RAM continues to get faster, more efficient, and more reliable with emerging technology. Ports Be sure to study section 3.15 carefully.