ORICO Tool Free Aluminum USB3.0 eSATA Dual Bay 3.5 inch SATA External Hard Drive Enclosure - Black(3529SUS3-C) 2 bay 3.5 inch SATA HDD enclosure; support 6TB2=12TB; support offline Clone function USB3.0 + e-SATA dual high speed interface; high-end aluminum alloy and plastic material Tool free; support hot-swap; intelligent sleep and temperature control Super silent cooling fan; LED lights indicating the working status What is in the box: 1 x ORICO USB3.0 Hard Drive Enclosure; 1 x 12V4A Power Adapter; 1 x 3.3Ft. USB3.0 Cable; 1 x eSATA Cable; 1 x User Manual; 1 x Service Card; 18 Months warranty and lifetime technical support