2 of 2 people found this helpful
There are some unused connections on that adaptor board; they are there for providing some different options to powering the board, but for usual deployments are unnecessary and can be ignored.
For an example scenario that works and does not use that USB port, there is a blog post here: Raspberry Pi 7” Capacitive Touch Display: Assembly and Enclosure
Many many thanks for the reply. Very helpfull info and a useful link.
Greets to all perhaps more informed than I.
The 7 inch Touch Screen has an adaptor board. On it is a small USB port which resembles the Power USB slot on the Pi.
Does any one know what it can be used for as I can not find any details on this adaptor board.
Is it also a power input USB slot.