Greetings,
As not officially being an owner of this product, my responses shall remain limited. Firstly, have you tried to install the latest drivers? If not, they can be found here:
NEXDISK Drivers
If so, here are some Frequently Asked Questions pertaining to this product:
NEXDISK FAQ
If you have further complications, you may direct your questions here, or the Support page on the official nexdisk site.
I hope this helps,
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Stack
Overflow
Unsolved 
