The markings do not refer to a specific device model, but rather to the manufacturing standards and material certifications of the circuit board itself.
If you are designing from scratch, follow this workflow: cm-4 94v-0 schematics
: Similar motherboard identifiers appear in desktop and laptop models like the HP Compaq 4000 Pro Go to product viewer dialog for this item. or Lenovo systems. Key Schematic Components The markings do not refer to a specific
| If you want… | Correct search / resource | |--------------|----------------------------| | | Search: “Raspberry Pi Compute Module 4 IO Board schematic” → Official PDF from raspberrypi.com/documentation | | CM‑4 pinout / datasheet | “Raspberry Pi CM-4 datasheet” (contains pin definitions, electrical specs) | | Your own custom carrier board design | Use CM-4 datasheet + reference IO board schematic. Specify PCB material as FR-4 UL94V-0 in your stack-up notes. | | Example 94V-0 board schematic (general) | Any standard digital/analog circuit – add a fabrication note “PCB material: UL94V-0 FR-4” | Key Schematic Components | If you want… |
Because "CM-4" was often used by Original Equipment Manufacturers (OEMs) in China and Taiwan to build products for other brands, the schematics were treated as "internal trade secrets." They were never published on the internet.