HD WD MY BOOK WORLD 320 GB EXTERNAL USB,16MB, LAN

Performance Specifications Rotational Speed 7,200 RPM (nominal) Average Latency 4.20 ms (nominal) Seek Times Read Seek Time 8.9 ms Track-To-Track Seek Time 2.0 ms (average) Transfer Rates Ethernet 10/100/1000 Mb/s capable Physical Specifications Capacity 320 GB Interface Ethernet Physical Dimensions English Height 6.780 Inches (Max) Length 5.630 Inches (Max) Width 2.23 Inches (+/- 0.010 inch) Weight 2.60 Pounds Metric Height 172.2 mm (Max) Length 144.3 mm (Max) Width 56.7 mm Weight 1.2 kg Environmental Specifications Temperature (English) Operating 41° F to 95° F Non-operating -4° F to 149° F Temperature (Metric) Operating 5° C to 35° C Non-operating -20° C to 65° C Electrical Specifications Current Requirements Power Dissipation AC Input Voltage 100-240 VAC AC Input Frequency 47-63 Hz