Some USB 3 ports do not recognize the RTL-SDR radio correctly and can result in a connection error. This is a known limitation documented at the following documentation link:
The following are the three workarounds that you can try on your end:
1. In the MATLAB Command Prompt, execute the following command:
sdrsetup
2. Uninstall the device drivers from your computers. Then, try to setup the RTL-SDR radio from scratch. While doing so, please use the instructions given at the following documentation link:
3. Try setting-up and using the RTL-SDR radio on a different computer, preferably with a USB 2 connection.
In addition, the following documentation explains some common errors and their corresponding fixes in setting up the RTL-SDR radio:
Hope this helps!
