Cavalry's CAUP series is a line of four portable hard drives, aimed at consumers with basic mobile storage needs. The models differ only in storage capacity, with 160, 250, 320, and 500GB drives available. Each CAUP model utilizes a USB 2.0 interface, through which it is also powered, for PC data transfer and backups. A thin, compact form factor, aluminum case, and shock absorption aim to optimize portability. Mac-formatted versions are available in Cavalry's CAUPT series.