> The Pi 4 needs 3 Amps for stable operation, though it can run at lower power. A computer's USB 3.0 port provides only 0.9 Amps and USB 2.0 provides only 0.5 Amps [...]

> To solve this problem, I worked with an engineering firm to create a custom circuit board that splits the Pi's USB-C port into two. The first port accepts USB power, so you can still deliver a full 3 Amps to the Pi. The second accepts USB data out, so the Pi can still impersonate a USB keyboard.

OK, but this makes it sound like the Pi is just the wrong computer for the task. Surely there's some other SBC that just has native external power and can do USB OTG.