How about your 1655?
It seems that Lavalys/Everest makes their own “database” and that is incorrect. Using Everest Home v2.00, the DW1655 description entry is still empty.
Everest is now no longer free, so 2.2 is the last. I believe that Everest is reporting the DVD-ROM DVP 1650 rather than the DVDRW 1650. The DVDROM is Nutech manufacturered. Everest does have the information to correctly identify the 1650 & as such should give the same info to that of the 1655.
N.B. I have noticed that it gives writing speeds for the 1650, but I still believe that the man id is confused with the DVP.
Wild, if you wanna test your BenQ DW 1650 is made by NU just put a DVD+RW disc in your drive & use DVD infopro’s (Direct Current) erase to test if it works.Please let me know your result