BUFFALO DriveStation Duo USB 3.0 2-Drive 4 TB Desktop DAS (HD-WH4TU3R1)

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 Mac computers RAID 1 support and hot-swappable hard drives provide comprehensive data protection