Seagate Replica 500 GB Complete Multi-PC Backup System with Dock ST905004BDA101-RK (Silver) Seagate Replica 500 GB USB 2.0 2.5-inch External Hard Drive General Features: Silver color External hard drive 500 GB capacity USB 2.0 interface Up to 480 Mbps data transfer rate 5400 RPM spindle speed Multi-PC version Easy installation, nothing to configure Easily retrieve accidentally deleted files Restore your entire system in the event of a PC crash Password protection ensures that only you have access to your computer's backed up files