I just looked at your link this most likely is a BENQ1620...Why? The 2.4x DL, 40x CDR and 40x CD-ROM. But I cannot guarantee but that is what you look for to help make the confirmation.
Not sure where you are located but if you are in USA you can get an I/O MAGIC 16x (BENQ1620) for $59 after MIR at Circuit City. Just look for those details mentioned above. It also will say BENQ in very small print on the top label.
Hope this helps