who can tell me where can i driver for plextor px-712a thanks
It comes with the OS, you already have it.
... but if you are looking for a firmware for your plextor:http://www.plextoramericas.com/index.php/download?task=viewcategory&catid=39
The first place you look for Drivers is the Manufacturer. Cudos for picking Plextor, I just love their Drives.