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XPS 13 9343 does not duplicated to projector by displayport DA100.(OS windows 10)

I have a Dell XPS 13 9343 laptop running Windows 10. I have just purchased a DA100 displayport adapter.

After upgrade to windows 10 from windows 7, does not duplicated to projector.

I'm upgrade or downgrade the intel graphic driver and DA100 driver. but still not duplicated.

I'm checking the H/W and S/W at the DELL service center. Service engineer said to me the result is all ok.

But he can't fix the problem.

Who can help me? 

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