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When I insert a pen drive in the USB slot of my Mac mini 2018 the Bluetooth mouse and keyboard lose connection. Anyone knows how to solve this?

I have Mojave 10.14.2 and both mouse and keyboard are Apple.

user3439894
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Federico
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  • When your say "pen drive" I assume you mean a USB Flash Drive, e.g. sandisk usb flash drive. What type of USB Flash Drive and have you tried any other brands and do you get the same results? – user3439894 Jan 15 '19 at 17:29
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    It sounds cludgy as all get out, but wrap your pen drive in foil (or buy a quality pen drive) – Allan Jan 15 '19 at 17:56
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    @Allan, your said, "It sounds cludgy as all get out, but wrap your pen drive in foil" and I just had to laugh because I almost was going to post the same thing when writing my first comment, even was going to suggest a USB extension cable to get it is away from the other devices. :) BTW, Federico, if you do wrap it in foil, make sure the foil is not touching the metal part of the USB connector so as to avoid a static discharge into the device. – user3439894 Jan 15 '19 at 18:05
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    @user3439894 - The "wrap your pen drive" brought back imagery of middle-school pregnancy prevention slogans – Allan Jan 15 '19 at 18:13

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This is most likely Bluetooth interference from radio frequencies.

Your choice is probably to not use a USB or get another device.

This means that any USB 3 port, cable or USB 3 device can emit radio frequencies that may cause interference with any Bluetooth devices you using in your computer.

(Source)

Another quotation:

The issue is that USB 3.0 hard drives can emit radio frequencies that interfere with Wi-Fi and Bluetooth transmissions on the 2.4 GHz band, especially when placed near the antennas in your laptop.

(Source)