The new thinkpad super multi-burner ultrabay slim drive with curved bezel is designed for optimum fit in thinkpad t40 series, r50 series and z60m notebooks, in the thinkpad x4 ultrabase and x4 dock (supporting thinkpad x40 series and x41 tablet notebooks) and in the advanced dock (supporting thinkpad t60 series and z60 series notebooks). The drive supports read/write operations in many cd and dvd approved formats including cd-r, cd-rw, dvd-ram, dvd-r, dvd-rw, dvd-rom, dvd+r, dvd+rw, dvd+r double layer and dvd-r dual layer media.Features: complies with the dvd forum dvd-multi recorder specification. Writes directly to dvd-ram discs as a drive letter. Records dvd video to dvd-r and dvd+r for playback in most consumer dvd players. Mpeg-2 decoding software for video and dvd playback. 2 Mb memory buffer. Enhanced ide (atapi) interface.Specifications: model name: 40y8622. Read: cd-r: 24x zone clv. Cd-rw: 4x clv. High-speed cd-rw: 10x clv. Dvd-r: 8x clv. Dvd-r dl: 2x clv. Dvd+r: 8x clv. Dvd+r dl: 2.4X clv. Dvd-rw: 4x clv. Dvd+rw: 4x clv. Dvd-ram: 3x zone clv. Write: cd-rom 24x cav. Dvd-rom 8x cav. Maximum burst data transfer rates: ultra dma mode 2: 33.3 Mb/sec. Multiword dma mode 2: 16.6 Mb/sec. Ata pio mode 4: 16.6 Mb/sec. Average access times: cd-rom: 150 ms (typical). Dvd-rom: 180 ms (typical).