The DriveStation Quattro TurboUSB uses four separate hard drives for greater reliability and security. In RAID 1 mode, redundancy protects your data from drive failure, while RAID 5 offers a good balance between storage capacity and security. Those who need a maximum of storage can choose RAID 0. The DriveStation Quattro TurboUSB also includes simple Plug-n-Play connectivity using USB 2.0 and eSATA Connections. With the latest eSATA hard drive technology this DriveStation supports high transfer rates - up to 100 MB/s! DriveStation Quattro TurboUSB lets you store, backup, or easily transport large files that you never thought you could store on an external storage device. It supports RAID technology, ensuring that your data stays safe.