All five new DW1620 drives have November 2004 date. My 2-bay USB/1394 cases can't recognize DW1620 strangely. They can't recognize Lite-On SOHW-1613/1633/1653 either though they work well with all other drives I tried (LG, Pioneer, Samsung, Toshiba, NEC, Plextor...) All of my 6 DW1620 are actually Nu-tech DDW-163, DW1620 OEM that originally have G7** firmware. The only PATA PCI controller card for ODD use can't be used for ODDs either right now so I have a configuration like this:
IDE 1: Booting HDD PATA Seagate ATA V 120GB
IDE 2: DW1620
IDE 3: DW1620
IDE 4: DW1620
PCI IDE 1: WD HDD 1600JB
PCI IDE 2: WD HDD 1600JB
PCI IDE 3: Toshiba 2.5-inch HDD
PCI IDE 4-12: Empty
PCI SATA 1: WD 2000JD
PCI SATA 2: Samsung P80SD 160GB
USB/1394: Empty (none recognized)
Just tried some recent firmware (BenQ and Philips versions, stock, MCSE-patched, RPC1-patched...) and B7V9 still seems to be good enough.
I would like to have retail drives of DW1620 Pro and DW1640 in addition to them for quality comparison. Compared to SOHW-1613S, DW1620 seems to be too heavy and long.