Please make the following note when plugging and unplugging any Mezzanine Adapter board from your Ultra96. The Ultra96 must be both powered off and unplugged from the 12V connector when disconnect or connecting a Mezzanine Adapter board. The reason for this is that the Ultra96 is still powered on via 12V even when the board is powered off. You must physically disconnect your Ultra96 from the power supply to remove the 12V input to the board. If you do not follow the above recommendations, we have seen various failures of both mezzanine adapter boards an Ultra96 boards.