Buffalo DriveStation Quad USB 3.0 4-Drive 8 TB Desktop DAS (HD-QL8TU3R5) USB 3.0 supports backward compatibility with USB 2.0 RAID 0,1,5,10 storage array using 4 hard drives Includes NovaBackup Business Essentials Software Backup any PC, Windows Server or SQL Datastore Increases file transfer rates up to 4 X over competive USB 2.0 hard drives Preformatted hard drive is ready to use out of the box TurboPC Utility ECO Manager conserves energy and battery power