I have a USB port on my device. So it came in handy for a wired internet connection without losing my only USB port. I'd say the USB ports on this unit are for flash drives and possibly a wired mouse. I encountered some issues when connecting the bluetooth dongle to my wireless mouse. The mouse works well when very close to the adapter, but not so well when 1-2 feet away. So good news in terms of power consumption, but not so good news for accessories that use power.
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