Portable USB Drive WD Passport 80 GB USB 2.0

picture taken from the western digital home page

Performance Specifications  
Rotational Speed 5,400 RPM (nominal)
Buffer Size 2 MB
Average Latency 5.50 ms (nominal)
Seek Times Read Seek Time 12.0 ms, Track-To-Track Seek Time 2.0 ms (average)
Serial Transfer Rate USB 2.0 Serial Bus Transfer Rate (USB 2.0) 480 Mbits/s (Max)
Physical Specifications  
Formatted Capacity 80,026 MB
Physical Dimensions Height 21.1 mm (Max), Length 144.3 mm (Max), Width 89.1 mm
Environmental Specifications Operating 5 C to 40 C, Non-operating -20 C to 65 C
Electrical Specifications External Power Specifications (optional) DC Input Voltage 5 VDC, 1.0A