Not only can you record, rewrite and playback the BD format, you can also read and play HD DVDs. Burn Fast, Burn Right with GGW-H10NI by LG. Optical disc format Super Multi Blue Drive. The Blu-ray disc format offers more than five times the storage capacity of traditional DVDs and can hold up to 25GB on a single-layer disc and 50GB on a dual-layer disc. Features this Multi Blue Drive: BD-RE/R read and write compatible, HD DVD-ROM read compatible, Up to 50GB of storage per disc, with Serial ATA interface. Supports Double Layer DVD+R, Dual Layer -R Discs (8.5GB)and High Speed Media Support and Large buffer memory 4MB TYPE Super Multi Blue BD Drive/HD DVD reader. WRITING METHOD: BD-RE Random Write, BD-R Sequential Recording Mode with Pseudo-Overwrite;Sequential Recording Mode without Pseudo-Overwrite, DVD-R/RW Disc at Once; Incremental Recording; Restricted Overwrite (DVD-RW only), DVD-R(DL) Disc at Once; Incremental Recording; Layer Jump Recording, DVD-+RW Random Write, DVD+R Sequential Recording, DVD+R(DL) Sequential Recording, CD-R/RW Disc at Once(DAO); Session at Once(SAO); Track at Once(TAO); Packet Writing And BUFFER SIZE: CD,DVD 2MBand BD, HD 4MB. and etc.