This is the area to clarify hardware specification if there's anything unclear from the datasheet. If the specification is software related, please ask in the related software section.
Power Button for up board

Can I put a power button for use on up-board? If so, which one should I use? Tactile or alternate on/off?
Comments
I connect there a 5V power supply with a latching switch between? So i don´t need the DC jack an the power button SW1?
That pin is only for the power button, not to power the board.
If you don't want to use the DC jack you can use the 5V input pin as you would do with a Raspberry Pi.
Check out the pinout from our wiki for more info: https://up-community.org/wiki/Pinout
pcb assembly