Intel's Thunderbolt technology hits the market today, nestled inside Apple's refreshed line of MacBook Pro notebooks. The new machines now have a Thunderbolt port on the side, denoted with a lighting bolt logo. What consumers want to know though is "What exactly is Thunderbolt and why should I care?" Simply put, Thunderbolt is a new high-speed PC connection that runs at 10Gb/s. A single cable supports both HD video and data transfers at the same time pretty much making all those other ports on your notebook useless, at least that's if Intel has its way.