The Raspberry Pi 4 Compute Module (CM4) is a compact version of the Raspberry Pi 4, designed for industrial and embedded applications. It features the same Broadcom BCM2711 quad-core ARM Cortex-A72 processor, but in a smaller, more flexible form factor, without the HDMI, USB ports, or Ethernet. The CM4 is intended to be used with custom carrier boards that provide additional connectivity and interfaces, allowing it to be integrated into more specialized hardware projects. It supports up to 8GB of RAM, Wi-Fi, and Bluetooth, making it powerful for a wide range of IoT, automation, and embedded solutions.