Raspberry Pi 4 Model B [upd] Full Schematic Site

If you want, I can:

Because the Pi 4 consumes more power than its predecessors, its schematic includes a complex Power Management Integrated Circuit (PMIC) Voltage Regulation: This chip takes the 5V input from the Raspberry Pi 4 Model B Full Schematic

A dedicated PCIe-connected chip that manages the two USB 3.0 and two USB 2.0 ports. If you want, I can: Because the Pi