Waveshare CM5-NANO-A Expansion Board for Compute Module 5 (55x41mm)

The Waveshare Nano Base Board (A) is an ultra-compact carrier board for the Raspberry Pi Compute Module 5, matching its footprint of 55 x 40 mm. It provides essential connectivity including USB 3.2, microSD slot, dual MIPI interfaces and a 40-pin GPIO header in a minimal form factor. With a USB-C port for both power and eMMC flashing, plus a handy BOOT button, this board is ideal for IoT applications, embedded systems and projects where space efficiency is crucial.

Features

• Ultra-compact board with the same dimensions as the Compute Module 5 (55 x 40 mm)
• Compatible with all Raspberry Pi Compute Module 5 variants, including Lite without eMMC
• USB-C port for power input and eMMC flashing
• USB 3.2 Gen1 Type-A port (up to 2A output)
• Dual MIPI 4-lane interfaces (22-pin, 0.5 mm FPC) for camera or display modules
• microSD slot for CM5-Lite versions
• 40-pin GPIO header for wide expandability
• BOOT button for easy flashing via USB-C
• 4-pin PWM FAN header for active cooling
• RTC battery header (2-pin) for real-time clock backup
• Dual-colour status LED (red for power, green for activity)
• Selectable IO logic levels: 3.3V or 1.8V

Specifications

• Compatibility: Raspberry Pi Compute Module 5, all variants
• Dimensions: 55 x 40 mm
• Power: 5V via USB-C (also for eMMC flashing)
• USB: 1x USB 3.2 Gen1 Type-A, up to 2A output
• Video/Camera: 2x MIPI CSI/DSI 4-lane FPC connectors
• Storage: microSD slot (for CM5-Lite)
• GPIO: 40-pin header
• Cooling: 4-pin PWM FAN header
• Control: BOOT button, special pins for power and management
• RTC: 2-pin battery header for RTC
• Indicators: Dual-colour LED (red and green)
• IO levels: Selectable 3.3V or 1.8V