LG Electronics 8X USB 2.0 Super Multi Ultra Slim Portable DVD Rewriter External Drive with M-DISC Support for PC and Mac, Black (GP60NB50) Style evolution from slimmer to slimmest Superior data protection with m-disc support 8x DVD-R writing speed TV connectivity Nonstop playability Drive Type: External Ultra Slim Portable DVD Rewriter Interface: USB 2.0 Buffer Memory: 0.75 MB Operating System: Windows 7/ Vista/ XP, Mac OS X CD-RW: 24X (write) CD-R/RW/ROM: 24X (read)