CM4/CM5 Carrier Board V1

Production build of a compact carrier board for the Raspberry Pi Compute Module 4 and Compute Module 5. The board combines USB-C data and power, Ethernet, 25 W PoE input, M.2 storage and essential peripheral connections in a 120 mm × 40 mm form factor.

Key Features

• Raspberry Pi Compute Module 4 and Compute Module 5 support
• Two 100-pin Hirose board-to-board connectors
• 120 mm × 40 mm board outline
• Six-layer PCB
• USB-C for data and 5 V at up to 3 A power input
• RJ45 Ethernet MagJack
• 25 W PoE powered-device input
• Jumper-selectable USB-C or PoE power input
• M.2 M-Key connector with support for 2230, 2242 and 2260 modules
• microSD card socket for Compute Module Lite variants
• 3-pin UART JST connector
• 3-pin I²C JST connector
• 3-pin PWM fan JST connector
• PWR and ACT indicator LEDs

Power Input

The carrier board can be powered through either USB-C or PoE. The active input is selected using the onboard power-selection jumper.

The USB-C input provides 5 V at up to 3 A and uses CC pull-down resistors for source detection. The PoE interface operates as a 25 W powered device through the Ethernet connection.

Storage

The M.2 M-Key interface supports 2230, 2242 and 2260 module sizes. A microSD card socket is provided for CM4 Lite and CM5 Lite variants without onboard eMMC storage.

Peripheral Connections

UART, I²C and PWM fan connections are exposed through dedicated 3-pin JST connectors. PWR and ACT LEDs provide visible system-status indication.

Repository Contents

This repository contains the KiCad design sources for the production V1 board, including:

• Schematic and PCB layout
• Project symbol and footprint libraries
• Component 3D models

Opening the Project

1. Install KiCad.
2. Clone or download this repository.
3. Open CM5Carrier.kicad_pro.

License

This hardware design is licensed under the Apache License 2.0.

Author

Designed by Asad Imran.