I have to admit I have not Google'd this myself so I apologize for my laziness. Can anyone tell me the difference in speed (if any) between FireWire 800 and USB 2.0 connections to external drives? UPDATE: I did some Google research. USB 2.0 specifications support higher theoretical throughput vs. FireWire. Actual tests show FireWire achieving higher throughput for both reading and writing. Neither USB 2.0 or FireWire achieve the speeds that match internal drives. In order to achieve internal drive throughput from an external drive, you need to use eSATA (external SATA) technology.