• Support for up to 4 drives provide large as of storage with a choice of high speed interfaces from USB 3.0 or eSATA.
• The removable front cover and accessible drive bays allows drives to be replaced easily in case of failure or a system upgrade.
• Built-in support for numerous RAID modes for most personal/business needs and an 80mm controllable cooling fan to keep drives from overheating.
• SuperSpeed USB 3.0 host interface, with transfer rates up to 5 Gbps.
• SATA revision 2 compliant eSATA host interface, supporting transfer rates up to 3.0Gbps.
• Supported RAID modes: 0 (stripe), 1 (mirror), 3 (parity disk), 5 (striped parity), 10 (1+0), Span/Concatenation.
• User-configurable, directly from the unit itself.
• 80mm cooling fan with 4 selectable speeds: Low, Med, High, Auto.

Turn 4 SATA hard drives into external RAID storage, connected through USB 3.0 or eSATA View larger ( https://images-na.ssl-images-.com/images/I/51I4IeXCpSL.jpg ) 4 Bay External Hard Drive Array RAID Tower – eSATA USB 3.0 Enclosure ----------------------------------------------------------------- The SAT3540U3ER 4-Drive USB 3.0/eSATA to 3.5" SATA RAID Enclosure is a high-performance external RAID storage solution that supports up to 4 high capacity (tested with up to 4TB per bay) 3.5-inch SATA hard drives over a USB 3.0 or eSATA connection. Product Features & Applications ----------------------------------- * SuperSpeed USB 3.0 host interface, with transfer rates up to 5 Gbps * SATA revision 2 compliant eSATA host interface, supporting transfer rates up to 3.0Gbps * Supported RAID modes: 0 (stripe), 1 (mirror), 3 (parity disk), 5 (striped parity), 10 (1+0), Span/Concatenation * User-configurable, directly from the unit itself * 80mm cooling fan with 4 selectable speeds: Low, Med, High, Auto * Auto power-saving when host connection disconnected or turned off * Removable front cover and accessible drive trays * Rugged aluminum chassis * Compatible with SATA revision 1/2/3 (1.5/3.0/6.0 Gbps) drives * Supports 3.5" form factor SATA hard drives * No driver or software installation * Plug-and-Play and hot-swap compatible * Add external RAID storage without worrying about driver or software support * Maximizing the transferability of storage between different computer systems * Large volume external storage with redundancy for backups or archiving important data * Video editing or photography professional/enthusiasts working with very large file sizes 4 Bay Hard Drive Array RAID Tower – eSATA USB 3.0 Enclosure RAID Enclosure - 4-Bay External SATA Hard Drive Array ----------------------------------------------------- The 4-bay RAID enclosure can be connected to the host/source computer through USB or eSATA and automatically builds your SATA RAID array based on your selection (Spanning, RAID 0, RAID 1, RAID 1+0, RAID 3, and RAID 5 supported), delivering a simple, yet flexible external storage solution. Designed for convenience, the enclosure features front panel LED indicators that provide RAID information and simple hard drive status and activity monitoring. The enclosure also features a built-in, 3-speed 80mm fan with automatic or manual controls that enable you to customize the speed of the fan as necessary to ensure suitable operating temperatures for optimized drive performance. Look for StarTech.com Branded Packaging - ensure you are getting a genuine StarTech.com product StarTech.com Advantages ----------------------- Support for up to 4 drives provide large as of storage with a choice of high speed interfaces from USB 3.0 or eSATA. The removable front cover and accessible drive bays allows drives to be replaced easily in case of failure or a system upgrade. The enclosure has built-in support for numerous RAID modes for most personal/business needs and an 80mm controllable cooling fan to keep drives from overheating.