MacMini 2018 bluetooth issues when USB devices used?

USB 3 cables and devices are known to cause Bluetooth and Wi-Fi interference issues. You can try rerouting the cables or using USB cables with better shielding, but in the end you may find that putting the Bluetooth dongle on the end a USB extension cable will work the best.

You’re not limited to the USB-A ports: the Thunderbolt ports work equally well with USB C-A adapters available for < $5 on eBay. So, try distancing the second device by hooking it to a Thunderbolt port and away from USB-A. If that doesn’t work (try as many combinations of ports as possible including connecting both to Thunderbolt), you could consider ditching the Logitechs for Apple Magics and let the mini manage all your Bluetooth devices. Good luck.

Sonic84 said:

“Do I have a short in my mini?”

———

From my perspective: No...

A default Bluetooth Adapter would seem to be what is getting in the way.

Use the Mac’s builtin Bluetooth Connector. Do not use the USB Bluetooth Dongle.

hcsitas said:

“You’re not limited to the USB-A ports: the Thunderbolt ports work equally well with USB C-A adapters available for < $5 on eBay.”

———

On a tough note, based on my own experience(s), I would stay away from eBay purchases, when it comes to Apple-compatible products. These purchased items may never work, they may never be returnable, and, moreover, may never be able to transfer ownership, if an option.

Perhaps a retailer(preferably Apple) is best? Keep a proof of purchase from whomever the seller is, should the device be faulty, go bad, or should you choose to return it.

Generally true, but the USB C-A adapter is a simple reconfiguration of pins to known connectors with zero electronics. Besides there's nothing Apple about USB. Mine's worked flawlessly, and cost $2.38. I say get the cheapest you can find, there's nothing to lose.