Buffalo's DriveStation Quad Hard Drive Array is a 4-drive, RAID enabled storage solution for small servers, creative professionals, offices and consumers who need large, redundant and high performance external storage. With support for USB 2.0, DriveStation Quad is compatible with almost any PC or Mac computer. eSATA 3.0 support produces exceptionally fast transfer rates, providing the speed that even the most performance critical applications like HD video production require. DriveStation Quad features the capacity, redundancy and performance required for demanding professional and server applications. Device Type: Hard drive array Total Array Capacity: 24 TB Interface: USB 3.0 Installed Devices / Modules Qty: 4 (installed) / 4 (max) Supported Drives: SATA-300 Storage Controller: RAID (SATA 3Gb/s) - RAID 0, 1, 5, 10, JBOD Hard Drive: 4 x 6 TB HDD SATA 3Gb/s automatic backup, Apple Time Machine compatible OS Required: Microsoft Windows XP, Microsoft Windows Vista (32/64 bits), Microsoft Windows 7 (32/64 bits), Microsoft Windows Server 2008 (32/64-bits), Windows 8 (32/64 bits), Microsoft Windows Server 2008 R2 (64-bits), Windows 8.1 (32/64 bits), Apple MacOS X 10.6 - 10.9 Power: AC 120/230 V - 50/60 Hz Dimensions (WxDxH): 5.9 in x 9.2 in x 6.1 in Weight: 12.13 lbs Manufacturer Warranty: 3 years warranty Device Type: Hard drive array Installed Devices / Modules Qty: 4 Supported Devices / Modules Qty: 4 Supported Drives: SATA-300 Total Array Capacity: 24 TB HDD Array External Interface: USB 3.0 Type: RAID Interface Type: SATA 3Gb/s Data Transfer Rate: 300 MBps RAID Level: RAID 0, RAID 1, RAID 5, RAID 10, JBOD Type: HDD Capacity: 4 x 6 TB Interface Type: SATA 3Gb/s Features: Automatic backup, Apple Time Machine compatible Expansion Bays: 4 (total) / 0 (free) x internal Interfaces: 1 x USB 3.0 - 9 pin USB Type B OS Required: Microsoft Windows XP, Microsoft Windows Vista (32/64 bits), Microsoft Windows 7 (32/64 bits), Microsoft Windows Server 2008 (32/64-bits), Windows 8 (32/64 bits), Microsoft Windows Server 2008 R2 (64-bits), Windows 8.1 (32/64 bits), Apple MacOS X 10.6 - 10.9 Features: Security lock slot (cable lock sold separately), built-in cooling fan Cables Included: 1 x USB 3.0 cable Software Included: Drivers & Utilities, Buffalo Tools Power Device: External power adapter Voltage Required: AC 120/230 V - 50/60 Hz Power Consumption Operational: 90 Watt Width: 5.9 in Depth: 9.2 in Height: 6.1 in Weight: 12.13 lbs Service & Support: Limited warranty - 3 years Service & Support: Limited warranty - 3 years