Mini Base Board (B) for CM5

Break out your Raspberry Pi Compute Module 5’s vital interfaces and more, including a PCIe M.2 M.2 M-Key slot, with this Mini Compute Module 5 carrier/breakout from Waveshare.

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This breakout board is designed for Raspberry Pi Compute Module 5, breaking commonly used interfaces to allow you to use your CM5 for development, projects, or even as a desktop PC.

All the essentials are available – a full-size HDMI port (and another available via FFC), Gigabit Ethernet, two USB 3.0 ports (and USB 2.0 available via FFC), USB-C input for power and programming, and a MicroSD slot.

In addition, the board also features dual MIPI CSI/DSI interfaces, PCIe M.2 NVMe slot (M-Key) for 2230 or 2242 M.2 devices such as SSDs, RTC battery holder, 4-pin fan header, Power/BOOT buttons and a dual-colour indication LED.

To top it off, advanced users will appreciate the onboard CAT24C32 EEPROM and ATSHA204 encryption chip, both connected via I2C.

With all the above features sitting on a familiar Raspberry Pi-esque footprint, this board is going to be an excellent companion for the majority of CM5 projects.

CM5 and accessories not included.

Features

• Designed for Raspberry Pi Compute Module 5
• PCIe M.2 M-Key slot for 2230/2242 NVMe devices
• Full-size HDMI port (second available via FFC)
• Gigabit Ethernet port
• Two USB 3.0 ports
• USB 2.0 via FFC connector
• USB-C for power and programming
• MicroSD card slot
• Dual MIPI CSI and DSI interfaces
• RTC battery holder
• 4-pin fan header
• Power and BOOT buttons
• Dual-colour status LED
• Onboard CAT24C32 EEPROM (I2C)
• Onboard ATSHA204 encryption chip (I2C)
• Compact Pi-style board footprint

What’s Onboard?

1. CM5 socket
   • Supports all Compute Module 5 variants
2. 40-pin GPIO header
   • For HAT / HAT+ modules
3. Power input / Programming
   • 5V / 5A input or eMMC burning
4. Encryption chip (ATSHA204)
   • Secure symmetric authentication
5. PSW power button
   • Hold to power off; short-press for soft off or on
6. STAT LED
   • Dual-colour status LED
7. BOOT button
   • Hold during power-up to enter bootloader mode
8. Dual MIPI interfaces
   • DSI and CSI display/camera connections
9. HDMI0 connector
   • HDMI port with 4K output
10. USB 3.2 Gen1 ports
    • 2x USB 3.2 Gen1, 5Gbps speed
11. RJ45 Gigabit Ethernet
    • Supports 10M / 100M / 1000M
12. 4-pin JST-SH fan header
    • Cooling fan, 5V power supply
13. TF card slot
    • Pre-burnt image support (Lite variant only)
14. IO-VREF selection
    • CM5 IO level: 3.3V (default) or 1.8V
15. Other function pins
    • Wi-Fi / BT disable or write protection
16. HDMI1 FFC connector
    • 4K output, connect via adapter
17. USB 2.0 FFC connector
    • Connect via adapter
18. RTC battery holder
    • Supports CR / ML1220 cells
19. M.2 M KEY
    • Supports 2230/2242 NVMe SSDs
20. I2C selection
    • Switches I2C0 / I2C1 for encryption and EEPROM
21. CAT24C32
    • EEPROM chip

Specifications

CM5 socket	Suitable for all variants of Compute Module 5
Networking	Gigabit Ethernet RJ45 connector
Connector	M.2 M key (2230 / 2242)
	Raspberry Pi 40-pin GPIO header
USB	USB 3.2 Gen1 Type-A × 2, USB 2.0 × 2 (6-pin 1mm FFC connector)
MIPI	4-lane MIPI interface × 2 (22-pin 0.5mm FFC connector)
Video	HDMI port × 2 (including one port via FFC connector), supports dual 4K outputs
Storage	TF card slot for Compute Module 5 Lite (without eMMC) variants
Fan header	5V, 4-pin JST-SH PWM connector
Others	Onboard EEPROM and encryption chip
Power input	DC 5V 5A
Dimensions	The base board: 85 × 56mm
	With metal case: 90 × 68mm

Resources

• Product Wiki

Package Contents

• 1x Mini Base Board (B) for CM5
• 1x Fixings/standoff pack
• 1x SSD mounting screw

CM5 and accessories not included.