Forget the dongle what you need is a keyboard cover
For all the plus on the new MacBook Pro’s, there is one glaring con and that is the new keyboard.
I had owned virtually every MacBook Pro generation since 2008 and not once did I had an issue with the keyboard. But this new keyboard while it feels nice it has a big flaw.
This new keyboard is super-sensible to dust and we aren’t talking crumbs size dust we are talking micro-particles if one of them gets under the keyboard it will cause issues and this isn’t covered under warranty. A keyboard replacement will set you back upwards of $500 at Apple.
But there is an easy fix and will only cost you $10. A good keyboard cover that is so low profile you won't even know is there.
Save yourself $490 and get one of this keyboard covers ASAP.