Buffalo's DriveStation Quad is a 4-drive, RAID enabled USB 3.0 storage solution ideal for small servers, creative professionals, offices and consumers who need redundant and high-performance external storage. Equipped with four optimized hard drives, DriveStation Quad features the redundancy and performance required for demanding professional and server applications. High performance, NAS hard drives optimized for continuous 24/7/365 operation USB 3.0 offers universal connectivity for PC and Mac computers Schedule automatic backups for your PC or office server with NovaBACKUP Buffalo Edition Time Machine support offers scheduled backups for protecting your Mac computer RAID 5/10 support and hot-swap hard drives provide comprehensive data protection More from the Manufacturer HD-QH24TU3R5