The BIGTREETECH PI4B Adapter v1.0 is what you have been waiting for if you are a Raspberry PI enthusiast. This adapter has the same dimensions as the Raspberry Pi boards and is suitable to use in a Raspberry PI based devices. It comes with standard Raspberry PI CM4 socket.
With this adapter you also get the CB1 module. This module is programmable and very powerful. Click on the link below to check out more about this new product.