Since the Compute Module 3 (CM3) module is in short supply, we made an adapter board, so the CM4 module can be used as a CM3 interfaceThe for Raspberry Pi Compute Module 4 (CM4) module is a product based on the performance of for Raspberry Pi 4 Model B, but its small form factor is very suitable for embedding in products or projects that do not have a large number of classic for Raspberry Pi.For deeply embedded applications, you can get all the computing power of for Raspberry Pi 4 in a compact form.CM4 uses the same quad-core ARM Cortex-A72 processor, dual video output, Gigabit Ethernet, UART, I2C, SPI, I2S and some PWM.CM4 to CM3 Adapter, for Raspberry Pi computing module CM4-CM3 adapter board, this adapter board is to convert the latest for Raspberry Pi computing module CM4 to CM3 interface, allowing CM4 to adapt to the old CM3+/CM3/CM3L series baseboard.Material:Plastic + Metalcolour:bluePackage Contents:1 * Riser CardOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.