Functions as an external USB 2.0 4x DVD-RW Drive. Functions as an audio CD player with program/repeat mode. LCD panel very user-friendly. Track editing function lets you make personal audio CDs. Copy and Test functions available.. Duplicator will automatically recognize format of source discs. Information sharing and data backup made simple. Multi-functional portable stand-alone duplicator. System is upgradeable via firmware. One year parts, labor and technical support.