Cavalry EN-CADA2B 3.5" USB 2.0/eSATA External Dual SATA RAID HDD Enclosure - Supports up to 2 Terabytes! Convenient, stackable design eSATA interface - USB 2.0 interface Supports two (2) 3.5-inch SATA hard drives (not included) Supports up to two 1 terabyte drives (2 terabyte total) Supports RAID 0 (SPEED) and RAID 1 (SAFETY)