The 500 GB/1 TB RD Removable Disk Cartridge from Dell combines a tough exterior design and an internal shock absorber. The cartridge offers up to 500 GB of native capacity and 1TB of compressed capacity for fast and easy back up of large amounts of information. Simply pop in the removable disk media, select the files or folders you want to protect, then drag-and-drop them into the directory folder. To restore files, you just have to reverse the process. The drag-and-drop capability gives you random access, for quick restoration of the files.