The DVD burners Optiarc AD-7240S, AD-7241S and AD-7243S were released starting in March 2009. The Optiarc AD-7230S drive shares the same hardware as the AD-7240S but has limited write speeds. Unlike previous models, Optiarc did not release Parallel-ATA versions of these drives.
CD Freaks published an Optiarc AD-7240S drive review.
Click here for detailed specifications of the Optiarc AD7240S.
The following firmwares are available for download here:
Overview on the used writing strategies