Chapter 4. Circuit diagram * A. B. C. D. A. B. C. D. Date: KiCad E.D.A. kicad (5.99.0-6751-g76ac8b5acf) Rev: 1. Size: A4. Id: 1/7. Raspberry Pi Design Files - Raspberry Pi Compute Module 4 IO Board
This is often a internal factory code or a specific batch identifier used by PCB manufacturers (like HannStar or Foxconn).
Key official resources to download:
While the Raspberry Pi Foundation typically does for the CM4 module itself (the core processor board), they provide extensive free resources for the official IO Board , which is essential for most projects.
A common point of confusion: The CM4 only exposes natively on the connector.
The CM4 (Compute Module 4) is the fourth generation of the Raspberry Pi compute module. Unlike a standard Raspberry Pi (Model A or B), the CM4 is a System on Module (SoM) that lacks standard USB ports, HDMI ports, and SD card slots. Instead, it exposes the CPU, RAM, and eMMC via two high-density connectors (J1 and J2), designed to be plugged into a custom "Carrier Board."
Safe repositories:
