It offers 100GB capacity of 3-layer BDXL-R/BDXL RE discs with 128GB storage capacity of Quad-layer BDXL R discs. Now you can write data on a single quad layer to 128GBs and 27 standard dvd equivalent BDXLTM discs or 5 single-layer Blu-ray discs. This lg electronic WH14NS40 comes with a combo kit that includes 2 SATA connectors - 2 drives to split 2 SATA power cables. Combo kit also includes 4 screws to lock your drive and the basic program of the Nero12.