Hornettek OT-201U2S Lycan 2.5" USB 2.0 External Enclosure with 1-Touch Backup Software: * 1-touch-backup button for automatic backup support * Universal fit for 2.5" SATA HDD * Backup4all software support for OTB function * Hot swappable * Plug and play connectivity * Rigid aluminum housing for heat dissipation * Bus powered under low capacity HDD * Patented backup button