That's a SATA drive. And a pretty nice one at that. Unfortunately though, it won't work in your PowerBook unless you're willing to rip out the optical drive & install one of these. Even then though you won't be able to harness the power that the drive can put out - as it'd still run at IDE speeds.
Having owned a few 100gb Hitachi and Seagate PATA 2.5" 7200 RPMs they really are just as fast as the bigger 250gb and 320gb 5400 RPM drives because of the bigger platter size.