Loading an "empty" nuc. Can't connect keyboards

[Kupuna]

Working with a new and empty (except memory and storage) NUC 8. A HDMI monitor is working, but when I boot the NUC with a flash drive containing a new Win 10 I have no keyboard access. The Windows Setup screen appears, but I can't type to it.
I have two keyboards: A Microsoft keyboard that uses a dongle in a USB port and a small portable bluetooth keyboard.
With the dongle in a NUC serial port, there is no evidence that the keyboard is seen. Also no reaction to the usual pairing keys on the portable keyboard.
I don't have a cabled keyboard. Will I have to buy one? Can I do anything with a BT mouse to get to the point when I can get basic Win 10 installed?
Installing Win 10 1909

[n_scott_pearson]

You haven't a neighbor you can borrow a keyboard from?

[Kupuna · Accepted solution]

My "duh" moment! I finally figured that out!

[LeonWaksman]

Try to insert the Microsoft dongle into directly into rear USB port (do not use USB HUB) or into front yellow USB port (charging port).

Leon