Because there at the top, in the regulatory compliance information that nobody reads, is the following text: Product name: Raspberry Pi 4 Model B 1 GB ... with 256 MB of RAM but later upgraded ...

Once it boots up, you'll see the Pi name, along with the RAM capacity ... This label will typically tell you the model and ...

[Maurizio] powered his Raspberry Pi from the floppy power connector of the Amiga. His model A Raspberry Pi works fine, but a model B would pull ... the Raspberry Pi’s ram, so the user needs ...