Dual Gigabit Ethernet Mini-Computer for Raspberry Pi CM4 - Compact DIY

In this review of the Dual Gigabit Ethernet Mini-computer base, the bottom line is simple: builders who want a compact, metal-enclosed platform for a Raspberry Pi Compute Module 4 will appreciate how complete the CM4-DUAL-ETH-BOX-A kit is. It is aimed at hobbyists, network testers and small appliance builders who already own a CM4, and the single biggest reason to buy is the combination of dual gigabit Ethernet ports and a purpose-built metal case with active cooling that makes assembly straightforward and reliable.

Key Features

• Dual Gigabit Ethernet: Two full-size gigabit Ethernet ports let the CM4 function as a small router, firewall or network appliance without additional adapters.
• Metal case with fan: The included metal top and bottom plus a 4010 PWM fan improve heat dissipation for sustained loads and concealed installs.
• CM4 compatibility: The base is built specifically for the Raspberry Pi Compute Module 4 (CM4), making it easy to drop in a CM4 (not included) and connect peripherals.
• Complete assembly kit: The package contains the CM4-DUAL-ETH-BASE, screws, a screwdriver and a 12V 2A power adapter so you can assemble a working unit quickly.
• Accessible I/O cutouts: ETH, CSI, DSI, RTC, HDMI, micro SD and USB cutouts are aligned to the connectors so cables and cameras fit without modification.

Who It's For

This base is best for makers, network enthusiasts and small business users who already plan to use a Raspberry Pi Compute Module 4 and need dual Ethernet for routing, VPN, or testing setups. It suits anyone who prefers a tidy metal enclosure and wants active cooling for 24/7 operation.

It is not for someone seeking an out-of-the-box mini PC experience since the CM4 is not included, nor for users who require integrated storage beyond the CM4 options; beginners who do not want to source and install a Compute Module may prefer a prebuilt mini PC instead.

Pros & Cons

Pros

• Dual gigabit Ethernet ports provide immediate network flexibility for appliance builds.
• The metal case combined with a PWM fan and airflow vents yields better heat dissipation under load.
• All necessary mounting hardware, a screwdriver and a 12V 2A power adapter are included for a fast build.
• Accurate cut-outs for ETH/CSI/DSI/RTC/HDMI/Micro SD/USB make routing cables simple and reliable.

Cons

• Compute Module 4 is not included, so buyers must source the CM4 separately before the unit is functional.
• The metal enclosure and fan add bulk compared with bare-board projects and may not suit ultra-compact builds.

Specifications

Part Number	CM4-DUAL-ETH-BOX-A
Primary Platform	Raspberry Pi Compute Module 4 (CM4) - not included
Ethernet	Dual Gigabit Ethernet ports
Enclosure	Metal case (top and bottom)
Cooling	Fan-4010-PWM-12V with airflow vents
Included Accessories	CM4 base, fan, screwdriver, screws pack, 12V 2A power adapter
Available Interfaces	ETH / CSI / DSI / RTC / HDMI / Micro SD / USB

Our Verdict

The CM4-DUAL-ETH-BOX-A is a practical, value-minded choice for anyone building a small network appliance with a Raspberry Pi Compute Module 4. It combines dual gigabit Ethernet, a sturdy metal case and active cooling with the accessory pack needed to assemble a working unit quickly, making it a sensible buy for makers and small deployments who already have or plan to buy a CM4.

Frequently Asked Questions

Does the kit include the Compute Module 4?
The CM4 is not included; the package provides the CM4-DUAL-ETH-BASE and enclosure parts, so you must supply a compatible CM4 separately.

Is a power adapter included?
Yes, a 12V 2A power adapter is included in the package for the base and fan.

Are camera and display connectors accessible?
Yes, cut-outs for CSI and DSI are aligned to the connectors so cameras and displays can be attached without modification.