Help: problem with benq 1620 in external enclosure

I purchased a Plumax PM-525C2-PPB external enclosure a few days ago. When I
put my Benq 1620 into the enclosure and connected it through USB to my computer
for the first time, the machine found new hardwares like “Base system device”,
“SM Bus controller” and “PCI device”, I installed the first two drivers using the CD come
with my machine. But the new “PCi device” can not find any drivers. Therefore,
my external enclosure does not show up on my computer at all.

Also, I tried to plug in an internal hard drive and deleted the newly installed drivers,
the same thing happens.

Is it possibly due to problems with the enclosure or something else?

Thanks a lot for all your help,

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