Acumen Disc External Blu Ray Drive Solution is Plug and Play easy. Archive massive amounts of data, and start creating DVDs. Supports the burning of up to 50GB of data or high definition video per Blu-ray disc, or up to 8.5GB using low-cost Dual Layer DVDs. Although commercial Blu-ray movie playback not supported in OS X, Blu-ray discs do mount on the desktop and can be backed up to the computer or played via third party software options. 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 BDXL disc which is the equivalent of 27 standard dvds or 5 single layer Blu-ray discs.