Performance Specifications Serial Transfer Rate USB 2.0 Serial Bus Transfer Rate (USB 2.0) 480 Mb/s (Max) Physical Specifications Capacity 640 GB Interface USB 2.0 Physical Dimensions English Height 0.60 Inches Length 3.2 Inches Width 4.3 Inches Weight 0.44 Pounds Metric Height 15 mm Length 83 mm Width 110.0 mm Weight 0.20 kg