LaCie Mobile Disk 301264 80 GB USB 2.0 Hard Drive 80 GB USB external hard disk with small size for exceptional portability USB powered; no bulky power adapter required 5400 rpm spin rate; 8 MB cache; and transfer rate of up to up to 480 Mbits per second Includes USB 2.0 cable and power-sharing cable, LaCie 1-Click Backup Software (Windows/Mac), Synchronization and Encryption Software (Windows only), and SilverKeeper Backup Software (Mac) Measures 3.19 x 0.59 x 5.04 inches (WxHxD); 1-year limited warranty