The DVD Burner Optiarc AD-7760H is a slimline drive. The Optiarc AD7763 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 7763H firmware on an Optiarc 7760H drive or vice versa. This will NOT work.
The following firmwares are available for download here:
Overview on the used writing strategies