I am trying to upgrade the firmware for SFF, got one question on the pin connection,
help page says 1 2 3 4 should be VCC USB+ USB- GND https://support.sodaq.com/Boards/Sara_SFF/#r4
but the schematic https://support.sodaq.com/Boards/Sara_SFF/sodaq_sara_sff_r2.pdf
says SARA_USB_IN/2.1C is connected to pin 4 for SARA USB, which is supposed to be for VCC
Could you please help to clarify which is the correct one?