Power: Bus powered via USB 3.0 cable Interface: USB 3.0 / 2.0 port Data Transfer Rate: up to 4800 Mbits/second (USB Bus Speed) Rotational Speed: 5400rpm Cache: 8MB or greater Operating Temperature: 5°C to 50°C Storage Temperature: -40°C to 70°C Operating Humidity: 5 to 90%, non condensing