Buffalo LinkStation Pro - Network Shared Storage - 500GB. Total storage capacity: 400 GB, Hard drive capacity: 400 GB, Hard drive rotational speed: 7200 RPM. Compliance industry standards: IEEE802.3ab / IEEE802.3 / IEEE802.3u, Data transfer rate (max): 1000 Mbit/s. Power requirements: AC 100 - 240V, 50/60 Hz, Power consumption (typical): 21 W. Weight: 1560 g. Operating temperature range (T-T): 5 - 35 °C