** VIN: this is main power supply input. See [[#Pinout|Pinout]] section for more information about voltage range.

** VIN_AUX (available on request): this input is provided to implement a second power supply unit on carrier board (for example based on supercap or battery) that prevents power cut in case main supply experiences a glitch or a power cut. This option is a powerful weapon to face unpredictable power loss and to guarantee data integrity.

** Overcurrent/thermal warning indicator.

* NAND flash: by default NAND technology is SLC. MLC memories are available on request.