Operating type: stand alone, internal interfaces, ata buffer memory, 128mb, fast ddr2 buffer memory-memory speed 4x faster than competing models using sdram, performance and reliability-tested for maximum compatibility & stability. Multi-language support-language is displayed in: English, Spanish, Portuguese or Japanese, dual-level security-separate startup and setup passwords to prevent, unauthorized usage. Control button4 button operation: maximum writing speed: dvd+/-r: 24x;dvd+/-rw: 8x;dvd+/-dl: 8x;cd-r: 52x;cd-rw: 32x, supported disc formats, dvd-rom, dvd-r, dvd-video, dvd-rw, dvd+r, dvd+rw, dvd+r9, cd-da,cd-rom mode 1, CD-ROM xa mode 2, multi-session photo CD , cd-I, videocd, CD extra (cd plus), supported recording discs.