The DVD Burner Optiarc AD-7910A is Optiarc's first ultra-slim DVD burner and was announced during CeBIT in March 2007. The Optiarc AD7913 burner adds support for LabelFlash but both drives share the same hardware and only differ in firmware. However you should not try to simply flash an Optiarc 7913 firmware on an Optiarc 7910 drive or vice versa. This will NOT work.
Click here for detailed specifications of the Optiarc AD7910A.
The drives are not for sale yet, so no firmwares are available either.