The 4-Bay 2.5" SATA 6.0 Gb/s eSATA Hot-Swap Tower from iStarUSA is suitable for storage applications. It holds four 2.5" HDDs/SSDs for storing data via eSATA connectors. A 2.6" cooling fan enhances the ventilation inside. The external JBOD storage case has a solid construction and a semi-transparent door with key lock. It is a cost-effective and flexible solution for critical data storage.