Lite-on 16X External DVD+/-RW Dual Drive EZ-DUB function works with the addition of two buttons to the DVD writer - DUB and FILE Write media compatibility - CD-R, CD-RW, DVD+RW, DVD+R, DVD+R, DVD+R DL, DVD-R and DVD-RW media Smart-Burn for efficient recording minimizes buffer under conditions Smart-X for fastest CD-DA/VCD/DVD data extraction speed Compatibility - Microsoft Windows 98SE, ME, 2000 & XP, Pentium 4 1.3 GHz or higher CPU and 128 MB RAM or higher