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.

Doa or Power issue

We ordered two UP 4000 to test for a project. Both arrived I forgot to order power supplies. I picked up the appropriate rated pwr supply from another ventor but they don't power up the units. I have two supplies and two UP 4000 and neither work. Are they that sensitive or are UP supplied power that different? I have tried all the tricks in the forums to try to get them to work. any suggestions or possiblities?