The HD-380BR-eSATA external enclosure encompasses both multi-functionality and style. It has both USB and eSATA interfaces for your convenience, an aluminum alloy casing for heat dissipation, and genuine brown leather for an additional touch of sophistication. With extra slits on the side, this new design enhances air ventilation and circulation. One of the special features you may find useful is the one-touch data back-up function. It allows you to safely and securely store your digital data with just a button. Easy as 1-2-3!