Raspberry Pi Compute Module 4 IoT Router Carrier Board Mini

The Raspberry Pi Compute Module 4 IoT Router Carrier Board Mini is a compact expansion board that equips a CM4 with dual gigabit Ethernet ports. Designed for makers, networking enthusiasts, and educators, it provides an efficient hardware platform for building custom smart routers, firewalls, and IoT gateways.

Dual gigabit Ethernet connectivity

The board provides two full-speed gigabit network ports by combining the CM4 built-in Ethernet with a dedicated PCIe 1000BASE-T network card. This direct PCIe connection ensures lower CPU utilisation, higher throughput, and superior long-term stability compared to USB network adapters.

Compact layout and peripheral expansion

Measuring just 55 by 62 mm, the board retains a 26-pin Raspberry Pi compatible GPIO header for attaching sensors, actuators, and smart cooling fans. It also provides a high-speed USB-C 2.0 port for external hard drives, Wi-Fi adapters, or LTE modules.

Broad operating system support

The carrier board supports OpenWRT for rapid deployment as an open-source router. It is also fully compatible with standard Raspberry Pi distributions, including Raspberry Pi OS and Ubuntu Server.

Versatile networking and IoT uses

Leveraging the quad-core Cortex-A72 processor of the CM4, this board is well suited for high-performance gateways, wireless network bridges, and mini-NAS units. It also serves as an effective LTE internet terminal or home automation hub.

Hardware requirements and handling advice

A Raspberry Pi Compute Module 4 is required and sold separately, with the onboard microSD slot supporting CM4 modules without built-in eMMC storage. Ensure correct orientation before seating the module into its high-density socket, and avoid repeated insertion and removal to protect the connectors.

Downloads & documentation

• Product wiki (DFRobot)
• Dimension Figure
• V1.0 model (include case)