Waveshare CM5 Mini Base Board Review (2026): A Spec-Based Look
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This waveshare cm5 mini base board review covers the CM5-IO-BASE-A, a carrier board designed for the Raspberry Pi Compute Module 5. It is defined by its dual 4K video output capability and its Gigabit Ethernet RJ45 connector. The board provides a compact 85 × 56mm footprint, making it suitable for space-constrained projects. You get two HDMI ports, one via FFC, to drive high-resolution displays. Connectivity is handled through USB 3.2 Gen1 ports and a PCIe interface. This listing offers a practical foundation for building custom mini PC systems or embedded devices that require robust networking and visual output without bulk.
What stands out
- Dual 4K video output support via two HDMI ports
- Gigabit Ethernet RJ45 connector for reliable wired networking
- Compatible with all variants of the Raspberry Pi Compute Module 5
- 16-pin PCIe Gen2/3 x1 interface for expansion
- Dual 4-lane MIPI interfaces for camera or display connectivity
Who it fits
Good fit for
This board suits developers and hobbyists who need a compact, reliable platform for the Compute Module 5. It is ideal for digital signage, industrial control panels, or embedded media centers where dual 4K displays are required. The Gigabit Ethernet port makes it well-suited for network-attached storage or server applications. If you are building a small form factor device that needs multiple USB ports and high-speed data transfer via PCIe, this base board provides the necessary interfaces in a small 85 × 56mm footprint.
Who should skip it
You should look at another option if you need built-in Wi-Fi or Bluetooth, as this board relies on the Compute Module 5 for those functions and does not list onboard wireless modules. It is also not suitable if you require more than two HDMI outputs or need legacy VGA or DisplayPort connections. Additionally, if you need a complete computer system rather than just a carrier board for a compute module, this product is not the right choice. It requires a separate 5V 5A power supply and does not include the compute module itself.
Verdict: The Waveshare CM5 Mini Base Board offers a compact, spec-rich foundation for Raspberry Pi Compute Module 5 projects. It is a practical choice for users needing dual 4K output and Gigabit Ethernet in a small form factor.
Waveshare CM5 Base Board Specs
Dual 4K Video Output
This specification means the board can drive two displays at 4K resolution simultaneously. You get a sharp, detailed image on each screen, which is ideal for productivity setups or digital signage. When shopping for small form factor computers, look for this feature if you need a multi-monitor workstation. It ensures you can expand your visual workspace without needing external docking stations or additional graphics hardware.
Gigabit Ethernet RJ45
The board includes a standard RJ45 port for wired network connections at speeds up to 1 Gigabit per second. You get a stable, low-latency internet connection that is more reliable than Wi-Fi for data-heavy tasks. This is essential for home servers or media centers. When comparing mini PCs, prioritize this port if you require consistent throughput for file transfers or streaming without the interference common in wireless environments.
Two USB 3.2 Gen1 Type-A Ports
These ports support USB 3.2 Gen1 speeds, allowing you to connect high-speed peripherals like external drives or flash storage. You benefit from faster data transfer rates compared to older USB standards. This is useful for backing up files or running applications from external media. When evaluating small computers, check for these ports to ensure you have the bandwidth needed for modern peripherals without bottlenecking performance.
5V DC Power Input at 5A
The board requires a 5V power supply capable of delivering 5 amps of current. You must provide a power adapter that meets these exact electrical specifications to ensure stable operation. Insufficient power can cause crashes or hardware damage. When setting up your mini PC, verify your power supply matches these requirements. This ensures the system receives enough energy to handle peak loads without voltage drops or instability.
Design and Build Overview
The Waveshare CM5 Mini Base Board measures 85 × 56mm. This compact footprint allows for tight integration into small enclosures. According to the listing, the board requires a 5V DC power input at 5A. This power specification ensures stable operation for the Compute Module 5 and connected peripherals. You must plan your power supply accordingly to avoid instability.
The layout prioritizes connectivity over bulk. It features a Gigabit Ethernet RJ45 connector for reliable wired networking. Two HDMI ports provide dual 4K video output. One port connects directly, while the other uses an FFC cable. This design supports flexible display arrangements for dual-screen setups. You also get two USB 3.2 Gen1 Type-A ports and two USB 2.0 ports via a 6-pin FFC connector. These options cover standard peripheral needs.
Expansion is handled by a 16-pin PCIe Gen2/3 x1 interface. This slot allows for additional hardware modules. Dual 4-lane MIPI interfaces support camera or display connectivity. The board includes a dedicated socket for the Compute Module 5, ensuring compatibility with all CM5 variants. This structure makes it suitable for embedded projects where space is limited. The design focuses on functional density rather than aesthetic finish. You get a practical tool for building compact systems without unnecessary bulk.
Setup and daily operation guide
Setting up this board requires a compatible Raspberry Pi Compute Module 5. The socket supports all CM5 variants, so you can choose the specific model that fits your needs. Once the module is seated, you will connect a 5V DC power supply delivering 5A. This power requirement ensures stable operation during intensive tasks. The compact 85 × 56mm footprint allows for easy integration into small enclosures or custom cases.
For daily use, the dual networking options provide flexibility. You can connect via the Gigabit Ethernet RJ45 port for wired stability. Alternatively, the 16-pin PCIe Gen2/3 x1 interface allows for added expansion, such as adding Wi-Fi or other peripherals. Video output is handled by two HDMI ports. One connects directly, while the other uses an FFC cable. This setup supports dual 4K video output, letting you drive two high-resolution displays simultaneously. This is useful for productivity or digital signage.
Connectivity extends to USB and camera inputs. You get two USB 3.2 Gen1 Type-A ports for standard peripherals. Two additional USB 2.0 ports are available via a 6-pin FFC connector. The board also features dual 4-lane MIPI interfaces for camera or display connectivity. This allows you to attach sensors or additional screens. Waveshare provides official Wiki resources to help with configuration. You can access these through their store page. The design focuses on practical connectivity for embedded projects.
Before You Buy This Board
You need a Raspberry Pi Compute Module 5 to use this board. The listing confirms it supports all CM5 variants, but you must purchase the module separately. Verify your specific CM5 model matches the socket requirements before ordering. You will also need a 5V DC power supply capable of delivering 5A. This is not a complete computer; it is a carrier board. Plan your enclosure to fit the 85 × 56mm footprint. Check if your project needs the PCIe Gen2/3 x1 interface for expansion. The dual HDMI ports allow for dual 4K displays, but you must ensure your displays support this resolution. You should review the official Wiki resources for setup details. This board fits into the small form factor category as a modular component. It suits users who want to build custom embedded systems rather than buying a pre-built mini PC. Ensure you have the necessary cables for the USB and MIPI interfaces.
Check before you buy
- Confirm you have a compatible Raspberry Pi Compute Module 5.
- Verify your power supply provides 5V DC at 5A.
- Check if your enclosure fits the 85 × 56mm dimensions.
- Ensure you need dual 4K display output capability.
- Review the official Wiki for specific setup instructions.
The product at a glance
Waveshare CM5 Mini Base Board
Best for: developers needing flexible I/O and dual 4K video
- Ethernet
- Gigabit Ethernet RJ45
- Video Resolution
- Dual 4K
View on Amazon: Waveshare CM5 Mini Base Board Affiliate link
The Waveshare CM5 Mini Base Board is an expansion carrier for the Raspberry Pi Compute Module 5. It features dual 4K HDMI output and Gigabit Ethernet. You get two USB 3.2 ports and two USB 2.0 ports for peripherals. The board supports dual 4-lane MIPI interfaces for cameras or displays. It requires a 5V 5A power supply. This compact 85x56mm board suits developers needing flexible I/O for custom projects.
Pros
- Supports all Raspberry Pi Compute Module 5 variants
- Dual HDMI ports for 4K video output
- Gigabit Ethernet RJ45 connector
- Two USB 3.2 Gen1 Type-A ports
- Dual 4-lane MIPI interfaces for cameras
Cons
- Requires separate 5V 5A power supply
- No built-in Wi-Fi or Bluetooth
- Limited to 16-pin PCIe Gen2/3 x1 expansion
Good fit if
- You need dual 4K display support
- You are building a custom embedded system
- You require multiple USB and MIPI connections
Skip if
- You need integrated Wi-Fi and Bluetooth
- You want a complete computer with CPU and RAM
- You need more than two HDMI outputs
Verdict: Waveshare CM5 Mini Base Board is a focused expansion board for Raspberry Pi Compute Module 5 users. It fits developers who need flexible I/O and dual 4K video without extra wireless features.
Specifications side by side
| Spec | Waveshare CM5 Mini Base Board |
|---|---|
| Ethernet | Gigabit Ethernet RJ45 |
| Video Resolution | Dual 4K |
| Model | CM5-IO-BASE-A |
Frequently asked questions
What is the exact model number for this Waveshare board?
The specific model number is CM5-IO-BASE-A. You can find this identifier on the product listing details. It distinguishes this carrier board from other Waveshare expansions. Knowing the exact model helps you verify compatibility with your Raspberry Pi Compute Module 5 before purchasing. This ensures you order the correct hardware for your project needs.
Does this board include the Raspberry Pi Compute Module 5?
No, the board does not include the compute module. You must purchase the Raspberry Pi Compute Module 5 separately. The listing confirms it supports all CM5 variants, but the module itself is not part of this package. You need to ensure your chosen CM5 model fits the socket requirements before ordering this base board for your setup.
Can I connect two 4K displays to this board?
Yes, this board supports dual 4K video output. You can drive two displays at 4K resolution simultaneously. This specification provides sharp, detailed images on each screen. It is ideal for productivity setups or digital signage applications where you need multiple high-resolution outputs. This capability is a key feature for users requiring extended desktop environments.
What power supply does this base board require?
The board requires a 5V DC power input at 5A. This power specification ensures stable operation for the connected components. You will need to connect a compatible power adapter to provide this voltage and current. Using the correct power source is essential for reliable performance and to prevent instability in your mini PC setup.
What is the physical size of this carrier board?
The board measures 85 by 56 millimeters. This compact footprint allows for tight integration into small enclosures. You can easily fit it into mini cases or custom projects. The small size makes it suitable for space-constrained builds where every millimeter counts. This dimension helps you plan your enclosure design accurately.
Who is this board best suited for?
This board is best for developers needing flexible I/O and dual 4K video. It fits users who want these features without extra wireless capabilities. You get a focused expansion board for Raspberry Pi Compute Module 5 users. It is ideal for those who prioritize wired connectivity and display output over built-in wireless modules.