ASUS DRW-22B3S Power Saving X Multi DVD&plusmn;R/RW Drive (DRW-22B3S/BLK/G/AS) E-Green automatically closes drive applications that are not in use to help conserve energy Optimal Tuning Strategy will perform a test before burning to generate the optimal burning strategy for best quality E-Hammer allows you to permanently delete the data on CD-R and DVD-R Auto Vibration Reducing System minimizes the spindle motor's vibration and the resonance between components, drives, and the PC case E-IDE(PATA) interface