Anyone know of a ‘cap’ I can put in here?

If you can remove the metal parts of the USB connector … and ALL the wiring … and it still stays in place OK, then that would be OK.

Or just use a dust cap?

Am I missing something here?! :rofl:

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Probably. :wink:

The micro USB in the RC is very recessed … I reckon that by the time the dust cap was engaged, it would be really awkward to get to in order to pull out.

I still think “nothing” is the better answer, me self. :+1:

Just in case you lose one. https://www.ebay.co.uk/p/25-Pcs-Anti-Dust-Soft-Plastic-Dock-Cover-Micro-USB-Port-Ear-Jack-J0v2-D1k5/1269255226?iid=332480735785&chn=ps