NOVAsomM7 Hardware User ManualN.M7-250518-HUM-M7-V1.2 Page 11 of 25www.novasomindustries.comEurope | Asia | AmericaTable 2 : Connectors pinout(*) Note : the uSD slot is 3.3V powered and has no provisions to manage the insertion or the removal of theuSD card with power applied, and thus no ESD protections equip the uSD slot.The insertion or the removal of a uSD card with applied power may result in a permanent damage to thecard or, worst, to the NOVAsom M7 board.The card MUST be inserted without power applied.The presence switch that equips the uSD slot of the NOVAsom M7 board signals to the processor that acard is in the slot, thus allowing the boot process to read the bootloader from the uSD slot.If the card is not found when the power is applied the boot process will look in eMMC chip for a validbootloader code but the presence of the eMMC depends on the NOVAsom M7 board equipment.The uSD slot is a push only operated slot.4.3 J9 Expansion Connector pinoutFigure 3 : J9 Details