Xcaret Pro has launched the Xcaret Pro 99 expansion-bay hard drives.

The drives add between 6GB and 32GB of disk space to FireWire-enabled PowerBooks and cost between $149 and $749.

Xcaret Pro 99 drives require no software drivers and draw power from the host PowerBook. All configurations of the drive will respond to "Sleep" and "Spin Down" commands.

The drives are hot-pluggable, and the manufacturer claims the drives are "high-performance devices" that are "faster than your internal hard drive". All ship with a one-year warranty.