The GT40N Super-Multi DVD Rewriter from LG is a slim DVD rewriter that was made to fit notebook computers. This LG rewriter has the ability to read and write various formats of both CD and DVD discs. It features a running optimized power control circuit, which allows this LG rewriter to monitor power and reflection of the media in use, calculate the optimum laser power and adjust it in real-time for a better quality burn.
It also features buffer under-run prevention. Buffer under-run occurs when the computer's data transfer speed cannot keep up with the rewriter's write speed, resulting in an unusable disc. With an embedded buffer under-run prevention function, this LG rewriter has the ability to pause and wait for the computer to catch up, which ensures that the disc is burned correctly.