Unlock the Power of Compute Module 5: Raspberry Pi CM5 PoE Expansion Board Review
The Raspberry Pi Compute Module 5 (CM5) represents a significant leap forward in embedded computing power. However, to truly harness its potential, you need a carrier board that unlocks its advanced interfaces.
Enter the Raspberry Pi CM5 PoE Expansion Board, a feature-rich baseboard available at Banggood that transforms the CM5 into a high-performance single-board computer (SBC) suitable for industrial applications, network-attached storage (NAS), edge AI, and multimedia centers.
This comprehensive guide explores every aspect of this expansion board, detailing its specifications, features, and why it might be the perfect foundation for your next flagship project. We will analyze its connectivity, power options, and potential use cases to help you decide if this is the right carrier board for your Compute Module 5.
What is the Raspberry Pi CM5 PoE Expansion Board?
This product is a carrier board designed specifically for the Raspberry Pi Compute Module 5. It acts as a breakout board, bringing the powerful I/O capabilities of the CM5 to standard connectors. Unlike the Raspberry Pi 5, which has fixed ports, a Compute Module paired with a custom baseboard offers unparalleled flexibility. This particular model from Banggood focuses on providing a rich set of modern interfaces, including high-speed storage, Power over Ethernet (PoE), and multiple display outputs.
Key Specifications at a Glance
Before diving into the details, here’s a quick overview of what this expansion board offers:
· Compatibility: Supports all versions of the Compute Module 5 (CM5 Lite with SD card slot or eMMC versions).
· Networking: Gigabit Ethernet RJ45 port with 802.3af/at PoE support (providing 5V/5A power).
· Storage: High-speed M.2 NVMe slot (supports sizes 2230, 2242, 2260, 2280).
· Video Output: Dual HDMI ports supporting 4K output.
· USB Ports: 2 x USB 3.2 Gen 1 ports and 2 x USB 2.0 ports.
· Camera/Display Interfaces: 2 x 4-lane MIPI connectors (22-pin FPC).
· GPIO: Standard Raspberry Pi 40-pin GPIO header for HATs and sensors.
· Power Input: 5V 5A via USB Type-C or PoE.
· Extras: Micro SD card slot (for CM5 Lite), RTC battery holder (CR/ML2032), and a 4-pin PWM fan connector.
Deep Dive: Top 5 Features That Make This Board Stand Out
This expansion board isn’t just about breaking out pins; it’s about adding genuine high-performance functionality. Here are the standout features that make it a compelling choice for makers and professionals.
1. High-Speed M.2 NVMe SSD Support
One of the most significant upgrades this board offers over many standard Raspberry Pi setups is the dedicated M.2 NVMe slot.
· Speed: It supports PCIe Gen 2/3 x1, delivering read/write speeds up to 8Gbps. This is a game-changer for storage performance.
· Versatility: The slot is compatible with M Key or B&M Key SSDs in various sizes (2230, 2242, 2260, 2280).
· Use Case: This makes the board perfect for running an operating system directly from a fast SSD, creating a high-performance NAS, or handling data-intensive applications like database servers or fast-caching web servers.
2. Integrated Power over Ethernet (PoE)
Simplifying deployment is crucial for embedded systems. This board features an integrated circuit compliant with the 802.3af/at PoE standard.
· Single-Cable Setup: It can receive both data and power (up to 5V/5A) through a single Ethernet cable.
· Reduced Clutter: This eliminates the need for a separate power outlet and cable near the device, making installations cleaner and more manageable.
· Reliability: PoE allows for centralized power backup, ensuring your CM5 project stays online even during power fluctuations.
3. Comprehensive Connectivity: USB 3.0 and Dual 4K HDMI
The board is future-proofed with modern I/O.
· USB 3.2 Gen 1: With two USB 3.0 ports (transfer rates up to 5Gbps), you can connect high-speed peripherals like external SSDs, high-resolution webcams, or fast flash drives without bottlenecking performance.
· Dual 4K Display Output: The inclusion of two HDMI ports supporting 4K output opens up possibilities for digital signage, dual-monitor kiosks, or a powerful media center capable of driving high-resolution displays simultaneously.
4. Standardized Expansion and Thermal Management
Despite its advanced features, the board retains the classic Raspberry Pi ecosystem compatibility.
· 40-Pin GPIO Header: You can still use standard HATs, sensors, and breakouts, ensuring your existing projects or components can be integrated seamlessly.
· Active Cooling Support: A dedicated 4-pin JST-SH PWM fan connector allows for intelligent, speed-controlled cooling. This is essential for maintaining performance when the CM5 is under heavy load, such as during NVMe transfers or AI inference.
5. Flexible Power and Storage Options
The board offers redundancy and flexibility in critical areas:
· Multiple Power Paths: Power via USB Type-C (5V/5A) or directly through PoE.
· Dual Storage Boot: You can boot from the ultra-fast NVMe drive or, for Lite modules without eMMC, the Micro SD card slot provides a familiar and low-cost storage option.
· RTC Support: The onboard holder for a CR2032 battery keeps the real-time clock running, which is vital for servers and data-logging projects that require accurate timestamps.
Potential Applications and Use Cases
Given its robust feature set, this Raspberry Pi CM5 expansion board is ideal for a wide range of advanced projects:
· High-Performance Network-Attached Storage (NAS): Combine the CM5’s processing power with the NVMe slot for a fast system drive and fast caching, and use the USB 3.0 ports for external storage arrays.
· Edge AI and Machine Learning: With the CM5’s increased computational capabilities, use the MIPI CSI connectors for camera inputs and the NVMe drive for storing large datasets or models.
· Digital Signage Player: The dual 4K HDMI outputs make it perfect for powering two high-resolution displays in retail or corporate environments.
· Industrial Automation Controller: The PoE feature allows for easy ceiling or wall mounting away from power outlets, while the GPIO can interface with relays and sensors.
· Network Router or Firewall: The Gigabit Ethernet port (with PoE) combined with USB 3.0 ports (for additional network adapters) can turn the CM5 into a powerful, custom router.
Conclusion: Is This the Ultimate CM5 Carrier Board?
The Raspberry Pi CM5 PoE Expansion Board available at Banggood successfully bridges the gap between the raw power of the Compute Module 5 and real-world, high-speed interfaces. Its inclusion of an M.2 NVMe slot and integrated PoE places it a step above basic carrier boards, targeting users who need serious performance from their embedded projects.
Whether you are building a compact server, an advanced robotics controller, or a multi-media powerhouse, this baseboard provides the essential connectivity in a well-thought-out package. For anyone looking to deploy the CM5 in a professional or advanced hobbyist capacity, this expansion board is undoubtedly a foundation worth considering.
