The Compute Module 4 IO Board is a companion board for Raspberry Pi Compute Module 4 (supplied separately). It is designed for use both as a development system for Compute Module 4 and as an embedded board integrated into end products.
The IO board is designed to allow you to create systems quickly using off-theshelf parts such as HATs and PCIe cards, which might include NVMe, SATA, networking, or USB. The major user connectors are located along one side to make enclosures simple.
Compute Module 4 IO Board also provides an excellent way to prototype systems using the Compute Module 4.
suitable for all variants of Compute Module 4
Standard Raspberry Pi HAT connectors with PoE support Standard PCIe Gen 2 x1 socket Various jumpers to disable specific features, e.g. wireless connectivity, EEPROM writing
Real-time clock with battery socket and ability to wake Compute Module 4
2 x MIPI DSI display FPC connectors (22-pin 0.5 mm pitch cable)
2 x MIPI CSI-2 camera FPC connectors (22-pin 0.5 mm pitch cable)
2 x USB 2.0 connectors Micro USB socket for updating Compute Module 4
Gigabit Ethernet RJ45 with PoE support
MicroSD card socket for Compute Module 4 Lite (without eMMC) variants