The power supply is fused and reverse polarity protected and provides power to the Pi by way of the GPIO header. The Fan runs as long as power is available. Simply connect your DC supply to the screw terminals and this board will keep your Pi3 / 3+ / 4 happy running under heavy load all day long! We recommend keeping the input voltage to 7-16VDC to prevent the regulator from getting too warm.

Finally, we have also added an optional 2 pin footprint on the board for a 2.54mm / 0.100” connector for use as a soft shutdown / restart. With dtoverlay=gpio-shutdown enabled in your /boot/config.txt file, connecting these two pins will trigger the Pi to perform a shutdown. Press the button again, and the Pi will boot right up. We recommend using a momentary pushbutton for this feature. At this time, the Pi 4 is only capable of shutdown and will not restart without modifying the bootloader.

Please Note: This board ships assembled without a header – basic soldering skills will be required to solder the header in place. Raspberry Pi 4, Stacking Header, and HAT Hardware are sold separately.