The image below showes 3 of these components interacting together during booting ... loads the following one until they reach the kernel. As we are talking about raspberry pi here is the booting ...

A Raspberry Pi 3 or later is recommended. The Raspberry Pi 2 and Zero 2 W do work, but will not provide an optimal experience. For devices that do not have built in WiFi, certain dongles / adapters ...

This label will typically tell you the model and the version e.g. Raspberry Pi 3 Model B V1.2. If, however, you only see the ...