What is the Raspberry Pi Compute Module 4?

The Compute Module 4 is officially launched on 19 October 2020, and there are 32 different variants to choose from.

The Raspberry Pi Compute Module 4 (CM4) and Compute Module 4 Lite (CM4Lite) are loosely based on the Raspberry Pi 4 Model B. The CM4 includes a cost-effective option for applications that do not require eMMC; this version is called the CM4Lite. The form factor of the new CM4 and CM4L differs from previous Compute Modules, which all shared the same form factor. The change was necessary to add new interfaces: a second HDMI, PCIe and Ethernet. Adding these new interfaces, especially PCIe, would not have been possible if the older form factor had been retained. Instead, the CM4’s electrical connection is via two 100-pin high-density connectors. Moving to the newer form factor has reduced the footprint. The overall footprint of the CM4, including the socket, is smaller thanks to the new form factor.

What is on the board?

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Package contents

• 1x CM4 Maker Board
• 4x Silicone bumpers

Links

• Getting started guide with the CM4 Maker Board
• CM4 Maker Board datasheet
• CM4 Maker Board CAD file
• Compute Module 4 product brief
• Compute Module 4 datasheet
• Compute Module 4 CAD file
• Compute Module 4 Lite (without eMMC) CAD file
• Getting started with Raspberry Pi from raspberrypi.org