Specification

     Mfr Part Number: WDXC2500JBRNN
     Features
           High-tech design: stackable, light-up case.
           Versatile: features both FireWire and USB 2.0 and 1.1 interface connections; works with both Windows and Macintosh systems.
           Instant storage: preformatted; simply plug it in and begin storing files.
           Fast: 7200 RPM and 8 MB cache performance for smooth digital video editing.
           Hot-swappable: connect and disconnect without powering off the computer.
           Guaranteed compatibility: backed by Western Digitals commitment to data protection and award-winning customer support and services.
     Capacity: 250GB
     Interface: USB 2.0 & Firewire
     Serial Transfer Rate:
           1394a: 400 Mbits/s (Max)
           USB 2.0: 480 Mbits/s (Max)
     Rotational Speed: 7,200 rpm
     Buffer Size: 8 MB
     Average Seek Time: 8.9 ms
     Power input: 100~240 VAC / 50~60 Hz
     Dimension (WxLxH): 6.08 x 8.61 x 1.74 inch / 154.43 x 218.75 x 44.2 mm