The other day a question from a reader reminded me that there are possible downsides to using USB 3 and USB-C devices.

Quick question – When I plug my USB 3 hub into my Mac I notice that my Wi-Fi connection slows down and sometimes even drops. Any idea what the problem is? Is it a problem with my USB port?

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The problem here is not with the USB port itself, but actually an issue that relates to some USB 3 and USB-C devices.

Some USB 3 devices generate radio interference in the 2.4GHz frequency, and this can have an adverse effect on both Wi-Fi and Bluetooth as they operate on this frequency.

If you are finding that a device is causing problems, here are some things you can do: