Raspberry Pi Compute Module 4 I/O Board

The Compute Module 4 IO Board is a companion board designed for the Raspberry Pi Compute Module 4 (sold separately). It serves both as a development platform for the Compute Module 4 and as an embedded board for integration into end products.

This IO board allows rapid system creation using off-the-shelf components such as HATs and PCIe cards, including NVMe, SATA, networking, or USB expansions. All major user connectors are conveniently located along one side, simplifying enclosure design and integration.

The Raspberry Pi Compute Module 4 IO Board has been extensively tested for compliance and meets the standards required in multiple countries. Complete compliance information and regional certificates are available at raspberrypi.org/compliance
.

Features:

CM4 socket: Compatible with all variants of Compute Module 4

Raspberry Pi HAT connectors: Standard HAT connectors with PoE support

PCIe expansion: Standard PCIe Gen 2 x1 socket

Real-time clock (RTC): With battery backup

Video support: Dual HDMI connectors

Camera and display interfaces: Dual MIPI camera and dual MIPI display connectors

Networking: Gigabit Ethernet socket with PoE HAT support

USB connectivity: On-board USB 2.0 hub with 2 USB 2.0 ports

Storage: SD card socket for CM4 variants without eMMC and support for programming eMMC variants

Cooling: PWM fan controller with tachometer feedback