The DVD burners Optiarc AD-7200A, AD-7201A and AD-7203A were released starting in November 2007. Optiarc also released the Serial-ATA versions of these drives. These drives can be recognized by the letter S instead of A after the model number, e.g. AD-7200S instead of AD-7200A.
Click here for detailed specifications of the Optiarc AD7200A.
The following firmwares are available for download here:
Overview on the used writing strategies