Raspberry Pi Compute Module CM4 to CM3 Converter Adapter

Note：

• 1. Make sure that the CM4 module is installed on the expansion board correctly before power on.
• 2. Please pay attention to the CM4 install directions.
• 3. The Raspberry Pi Compute Module 4 or heatsink is not included in the packing list.
• 4. User Manual: wiki.geekworm.com/CM4_to_CM3_Adapter

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Overview
Since the Raspberry Pi Compute Module 3 (CM3) module is in short supply, the CM4 to CM3 converter adapter is designed to convert CM4 module to CM3 interface.

This adapter board converts the latest Raspberry Pi Compute Module 4 (CM4) to CM3 interface, allowing CM4 to adapt to the old CM3+/CM3/CM3L series baseboard.

When install the CM4 module into CM4 to CM3 adapter board, please pay attention to the CM4 install directions.

Specifications

• Raspberry Pi Compute Module 4 interface
• 1 x CM3 interface
• 1x System status led indicator
• 1x Reboot Button
• Operating temperature: 0℃~80℃
• Dimensions: 67.6x46.5mm

Packing List

• 1x CM4 to CM3 Adapter

FAQ

Q1:Which GPIO can be used after use the CM4 to CM3 Adapter?

A: CM3 has 46 GPIOs, ranging from GPIO0~GPIO45; while CM4 has only 28 GPIOs, ranging from GPIO0~GPIO27; so if you want to use CM4 to replace CM3, GPIO can only use GPIO0~GPIO27, because CM4 has only 28 GPIO, please refer to the datasheet of CM4 and CM3, thanks!