AMS VENUS DS-DS3RPRO2 Aluminum / Plastic 3.5 Black SATA I/II/III USB 3.0 & eSATA 2 Bay Hot-Swappable RAID Storage Enclosure AC Adapter: Yes Material: Aluminum / Plastic Dimensions: 7.87 x 3.94 x 5.52 Fan: Yes Specifications: Capacity: 3TB or above Drive bay: 2 x 3.5 HDD Indicator: Power HDD1/HDD2, USB LINK/ACT, eSATA LINK/ACT Cooling system: 5cm Fan with On/Off switch Power: 12V/3A auto-switch power adapter Weight: 4.25 lbs.