This Drobo DR04D-U external data backup storage hard drive is a 4-bay. FOR PARTS. DOES NOT WORK. Does come with four 1.5TB Western Digital SATA drives (not tested). Has not been opened and has warranty sticker attached. UNIT AND DRIVES ONLY (No usb or power cables)

The Drobo DR04D-U supports SATA III and SATA II interfaces, and is compatible with 3.5 inch drives. Its sleek black color and feature set make it a great choice for those in the market for a high-quality drive enclosure. This item is listed under the Computers/Tablets & Networking category, specifically in the Drives, Storage & Blank Media and Drive Enclosures & Docks subcategories.