This is the third version of Western Digital's My Passport Studio pocket drive, and it should appeal to anyone who needs a drive for backing up data on the road. Just slip it in your suitcase and away you go.
Three different types of Passport drive are sold by Western Digital; the other two being the Elite and Essential versions. The Studio is the only version pre-formatted for Mac, and the only one with a FireWire 400 option.
This drive has a clever port array that lets the FireWire 400 cable split where it joins the drive; one part supplies the power and the other ferries the data. We tested the read and write speeds of both FW400 and USB protocols and found them to be in line with predictions, and acceptable.