DrageMester wrote:Since the BenQ DW1640 operates in UDMA Mode 2, I don't think you'll be able to burn at 16x with any external enclosure. 12x is the fastest I would hope for and you can achieve that with e.g. an enclosure based on Prolific PL3507 chipset.
I ran a Sony DRU-810A (rebadged DW1640) in a Mad Dog USB 2.0 enclosure with (I think) a Cypress chipset. As you mentioned, the UDMA2 limited the burn speed. Crossflashing to an EW164B sets the drive to UDMA4 and makes full 16x burns in external enclosures possible (I know you know this Drage, but the info is for the OP).