Specifications/Features32.Specifications/Features:Features:• Aluminum Casing Cools Down Your Hard Drive• Vents To Intake Cool Air• Maximum Transfer Rates Up to 5 Gbps w/USB 3.0• Maximum Transfer Rates Up to 3Gbps w/eSATA• Active Large 80mm Fan To Exhaust Heat• Easily Add Storage to Any System with USB 2.0, 3.0 or eSATA• Backwards-Compatible with USB 2.0 or 1.1• Hot-Swappable: Plug & Play Without Rebooting• Attractive LED Indicates Power & HDD ActivityNexStar HX4 (NST-640SU3-BK)• Supports IndividualNexStar HX4R (NST-640S3R-BK)• Supports Individual, JBOD, RAID 0, 1, 3, 5 & 10 ModesNexStar HX2R (NST-620S3R-BK)• Supports Individual, JBOD, RAID 0 & 1 ModesSpecifications:• Model: NST-640SU3-BK• Drive Support: SATA I/II/III Hard Drives• Drive Size: 3.5”• Internal Interface: SATA• External Interface: USB 3.0 & eSATA• HDD Capacity: Up To 16TB*• Power Supply: AC Adapter• Fan: 80mm• Material: Aluminum & Plastic• Dimension: 209 x 170 x 181 mm• Model: NST-620S3R-BK• Drive Support: SATA I/II/III Hard Drives• Drive Size: 3.5”• Internal Interface: SATA• External Interface: USB 3.0 & eSATA• HDD Capacity: Up To 8TB*• Power Supply: AC Adapter• Fan: 80mm• Material: Aluminum & Plastic• Dimension: 209 x 170 x 181 mm*Check our website www.vantecusa.com for any updates• Model: NST-640S3R-BK• Drive Support: SATA I/II/III Hard Drives• Drive Size: 3.5”• Internal Interface: SATA• External Interface: USB 3.0 & eSATA• HDD Capacity: Up To 16TB*• Power Supply: AC Adapter• Fan: 80mm• Material: Aluminum & Plastic• Dimension: 209 x 170 x 181 mm