Pioneer BDR-XD05B 6X Slim Blu-ray Burner in Retail Box Bundle with CyberLink Software and 3pk M-Disc BD Pioneer external burner bundle includes a 3 pack M-DISC BD M-DISC uses a non-volatile rock-like data layer, which is more durable than reflective organic dye-based layers found in conventional DVDs. It allows permanent data storage lasting up to 1000 years OS: Mac OS X (10.6 or higher), Windows XP (SP3), Vista, 7, 8, 8.1. CPU and RAM: Core 2 Duo E6750 (2.66MHz), AMD Phenom 9450 (2.1GHz) or faster, 2.0GB RAM (for Blu-ray playback) Write and read speeds of 6x for BD-R, 8x for DVD-R, 24x for CD-R. BD Dual Layer (DL) burn speed at 6x and read speed at 6x. DVD Dual Layer (DL) burn speed at 6x and read speed at 8x Buffer size of 4MB and USB 3.0/2.0 Interface