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You have to have USB 3.0 and the correct drivers on your computer.
Here is why there will likely not be any USB 3.0 accessories that actually work..
The Note 3 is not capable of hosting 3.0. It would require more power to legitimately host a USB 3.0 device. Not only that, the hardware is just not capable nor are there any drivers for it in Android.
It can read and write at high speeds from a computer because the computer hosts the drivers and has the correct drivers. Only if it has USB 3.0.
Any accessories you see that say 3.0 (like OTG cables) are not really 3.0. Especially if they are not manufactured by Samsung.
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