What is one great complement to the title yet? Perhaps even more that the burner initially ran super, then could read abruptly no disk and had to be returned. Oddly enough the by the responsible LG service company as "replacement unit" returned copy was virtually not at all. The device could not be correctly recognized by the PC. The Service-mails from LG also helped not because of my specific problem (unit 1 ran flawlessly, unit 2 under the same conditions almost not at all) has not been received. Instead, there was the usual advice (renew driver, use both cables for adequate power, etc.) The torch had to be eventually sent again. Now I have again received a "replacement unit".