Up for trade is an HP 640c- internal burner. Burns lightscribe discs- you take the disc out, flip it over, and the drive puts your label directly onto the disc.
Burns all types of discs- double layer, +r, -r, etc.
Make offers, mainly looking to trade this for something interesting, as I just picked up an external burner.
Its in my computer at the moment, but if you really want pics of it open or something, let me know.