Three Layer BDXL-R/BDXL RE discs offer 100GB capacity while quad layer BDXL-R discs boast 128GB storage capacity. You can now write up to 128GBs of data on a single quad layer BDXLTM disc which is the equivalent of 27 standard dvds or 5 single layer Blu-ray discs. This LG WH14NS40 comes with a combo kit that includes a 4 Pin to 2 SATA power cable which splits into 2 SATA connectors -- allowing 2 drives to be powered. The combo kit also comes with 4 screws to lock in your drive and a Nero12 Essentials program.