Read and write Blu-ray discs at 16x with the WH16NS40 that allows you to record up to 128GB of files, photos, or documents onto a quad-layer BD-R disc. SATA interface technology allows for easier integration and faster performance while M-DISC™ provides superior reliability in data storage that is perfect for archiving important data.16X BD-R Write CapabilitySerial ATA InterfaceWrite and Read Quad, Triple, Double Layer BD-R DiscsM-DISC SupportMax. 16X DVD±R Write SpeedBlu-Ray Disc, DVD and CD Family Read/Write Compatible4 MB Buffer Under-Run Prevention Function EmbeddedRoHS Compliant3D Blu-Ray Title Playback