CoolMax Gemini CD-309 Series is portable size & excellent quality 3.5” HDD Aluminum External Enclosure, which is specially designed for high capacity hard drive. And its aluminum material design is great for heat dissipation, you don’t need to worry about hard drive overheat problem anymore. Gemini CD-309 Series gives you the freedom to work anywhere; no matter you’re in the office, at home or on the plane. This portable 3.5” HDD external enclosure provides maximum durability, flexibility and portability with various interfaces. Once you download your information to Gemini CD-309 series, you can travel and connect it to any systems and gain access to your programs and data files anywhere. With built-in hot swap technology, you can connect and disconnect the drive any time.