I hooked up my benq 1640 to the external enclosure. The transfer rate test did not work with this drive either. Nor did the TRT work on my XP machine when I plugged the "external" 1640 into it. So this problem must be caused by something with the enclosure electronics. Oh well, not a big deal since my SATA liteon can do the TRT for me. The benqs work perfectly for quality scanning when attached to the enclosure. I thinking of buying a IDE to USB converter like this one:
http://www.emtcompany.com/products/a...pter-cable.htm
so I don't have to use the enclosure mechanism with my benq. Anyone familiar with this type of converter?