Shortly after the Raspberry Pi 3B+ came out, I realised that the PoE pins prevent the RasPiO Portsplus from fitting on the GPIO header.
— Raspberry Pi (@Raspberry_Pi) March 28, 2018
So I redesigned it so it now fits on ALL 40-pin Raspberry Pis. The video tells the story…
What is Portsplus 3?
It’s a small PCB which can slip over the header of a Raspberry Pi so that you can identify all the GPIO pins. I find them really useful as it avoids counting pins and helps avoid wiring errors.