**2: VIN
*insert microSD card in the slot J43.
[[File:SBCLynx-XUELK.png|thumb|center|600px|Target setup for first boot]]
Once power has been applied to the target, U-Boot bootloader will be fetched from the SPI NOR flash and executed. Boot messages will be printed out to the serial console. Redundant U-Boot environment is stored in the NOR flash as well, as depicted in the following image.