That's only when it is trying to identify a 'blank' device, you choose it to help it identify if it can't. You don't get to choose anything if it can identify the device attached. I got to see it in action once when a flash failed.
The software already tell you that it has found an Oxford911 device.
However, like beach-hobo said, I can confirm that not only does NEC3500 has a problem, Pioneer 108, BENQ1620 are also not recognize as UDMA2 device.....