1. This CM4 to CM3 adapter converts the latest Raspberry Pi Compute Module 4 interface CM4 to CM3, allowing the CM4 to adapt to the old CM3+/CM3/CM3L series.2. The original intention of the design: Since the Raspberry Pi computing module 3 CM3 module is in short supply, the CM4 to CM3 adapter is designed to convert the CM4 module to the CM3 interface.3. The for Raspberry Pi Compute Module 4 (CM4) module is based on the performance of the Raspberry Pi 4 Model B, but with a smaller form factor, it is ideal for embedding into products or projects that don't have a lot of classic Raspberry Pis.4. The CM4 uses the same quad-core ARM Cortex-A72 processor, dual video outputs, Gigabit Ethernet, UART, I2C, SPI, I2S, and some PWM.5. Compact Design: Small and lightweight, for deeply embedded applications, you can get all the computing power of Raspberry Pi 4 in a compact form.Product name: CM4 to CM3 adapter boardProduct size: 67.6 x 46.5mmNote: Before powering on, please confirm that the CM4 module is correctly installed on the adapter boardMaterial: PCBcolour: bluePackage Contents:1 x CM4 to CM3 adapter boardOnly the above package content, other products are not included.Note: Light shooting 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.