ASUS Internal DVD Disc Drive - Opened, Unused. An energy-saving internal DVD disc drive that reduces power consumption by 50% when unused. - SATA connection internal DVD disc drive - DVD±R maximum 24x speed, DVD±R (Dual Layer) maximum 8x speed writing - Supports writing to M-DISC for long-term storage - "E-Green" function reduces power consumption by up to 50% when inactive - "Disc Encryption II" function allows for encryption of recorded data - "Drag-and-Burn" function allows for easy writing via drag and drop - Includes immediately usable writing software and backup software