IBM Lenovo W700 BLU-RAY Recordable Drive 42T2538 - 42T253942T2539 and ASM # 42T2538 * Records up to 25 GB of data on a Blu-ray Single Layer disc and up to 50 GB of data on a Blu-ray Double Layer disc * Enables playback of high-definition Blu-ray movie content * Supports read/write compatibility with multiple CD, DVD, and Blu-ray standard formats including CD-R, CD-RW, DVD-RAM, DVD-R, DVD-RW, DVD+R, DVD+RW, DVD+R Double Layer, DVD-R Dual Layer media, BD-R/BD-RE Single Layer, and BD-R/BD-RE Double Layer media * Provides 4 MB buffer underrun protection for reliable media recording * Includes the following software packages:Specs:Write speed:4x BD-R2x BD-RE2x BD-R DL2x BD-RE DL8x DVD-R6x DVD-RW8x DVD+R8x DVD+RW4x DVD-R DL(D9)4x DVD+R DL(D9)5x DVD-RAM24x CD-R16x CD-RWRead speed:4x BD24x CD8x DVDCan read DVD-RAM disc