The USB port is one versatile port. We use it for storage, charging, playing with USB toys and now for the USB mosquito repellent dongle. That’s right, you can now repel mosquitoes via USB. Assuming the device works anyway.
At least it will only cost you $6 to find out. This device generates a repellent field to which some insects are sensitive. My guess is that it doesn’t have a far range. If any of you have tried this, let us know.