SimpleTech Duo Pro 1TB Ext USB/eSATA Hard Drive High performance storage for data-intensive applicationsRAID 0 for performance or RAID 1 for protect Stackable with Pro and Simple Drive designs - WARNING: The solder used in this product contains lead, a chemical known to the State of California to cause birth defects and other reproductive harm. Please wash hands after handling internal components and circuit boards and avoid inhalation of fumes if heating the solder. 1TBstorage capacity Fabrik Ultimate Backup for unbeatable online protection Fabrik local backup for onsite protection High speed USB 2.0 and blazing- fast 3Gb eSATA Smart fan for quiet reliability - NOTE: THIS PRODUCT CANNOT BE SHIPPED TO MASSACHUSETTS OR DISTRICT OF COLUMBIA (WASHINGTON, D.C.)