Here it is, 8.99$ for 3 USB A adapter.
https://www.amazon.com/Adapter-CHOE...&keywords=USB+C+to+USB+A+female+adapter&psc=1
You're welcome

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Well I imagine that any app that doesn't use the particular Touch bar API will have default escape button on top left corner.
And tactile feedback is useful cause it let you know where your fingers are, you "feel" it. On a all touchscreen keyboard it's clearly annoying. However since on the MBP it will only be one row, actually your finger will never really miss since it's the only glass part of the keyboard. I mean, you likely won't ever miss an escape key stroke because there isn't nowhere else to hit, except too much on the right, something that is very unlikely to happen if you are already used to hit escape in the top left corner.
Also, the actual "hit zone" for an escape button could be way bigger than the physical button it replace. It's highly likely that at least some third party app will let you configure the touch bar buttons, and probably that you will be able to actually make the escape button something like 1 1/2 inch wide for example.
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About the Touch bar
Personnally I think that Apple will replace volume and brightness with finger gestures. like 2 fingers slide to the right or left = volume up and down. 3 fingers = brightness up and down.
If it incluse force touch, it could also be "2 fingers hard press = mute on or off" "3 fingers = shut down screen"
I think that it will be used to browse videos, and that the API will let apps use the touch bar for very precise sliders. (I already imagine that Pixelmator folks are already implementing something like that)
However it could also be used to move the dock on the touch bar when you select the option "hide dock", which could actually free a good chunk of screen space for lots of peoples.