Mini Base Board (B) / Mini-Computer for Raspberry Pi Compute Module 5, Onboard EEPROM+Encryption Chip (WS-31234)

• the Base Board + Metal Case + Power Supply

Mini Base Board (B) / Mini-Computer designed for Raspberry Pi Compute Module 5 (NOT Included), Onboard EEPROM And Encryption Chip

Mini-computer for Compute Module 5

Designed for Raspberry Pi Compute Module 5

Waveshare CM5-IO-BASE-B inside, fast and easy to build a mini-computer

Version options

CM5-IO-BASE-B
the base board only

 

CM5-IO-BASE-BOX-B
the base board + Aluminum Alloy case + 27W power supply

* Please refer to the Package Content for detailed part list

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 40PIN GPIO header
USB	USB 3.2 Gen1 Type-A × 2, USB 2.0 × 2 (6PIN 1mm FFC connector)
MIPI	4-lane MIPI interface × 2 (22pin 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, 4PIN 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

What's the differences

CM5 Base Board	Interface count and specifications
	PoE	Gigabit ETH	40PIN GPIO	PCIe	USB①	MIPI	HDMI	RTC	Fan Header②	Power Input	Features
NANO A			√		3.0×1	×2		SH1.0	√	5V	CM5 sized
NANO B		×1	√	16PIN PCIe	3.0×1	×2	√	SH1.0	√	5V	CM5 sized
mini Base A		×1	√	16PIN PCIe	3.0×2 2.0×2	×2	×2	ML/CR1220	√	5V	mini size
mini Base B		×1	√	M.2 M KEY	3.0×2 2.0×2	×2	×2	ML/CR1220	√	5V	mini size, onboard EEPROM and encryption chip
Mini Dual Gigabit		×2	√		3.0×1			SH1.0	√	5V	dual ETH
PoE Base	√	×1	√	M.2 M	3.0×2 2.0×2	×2	×2	ML/CR1220	√	5V	USB×4
Raspberry Pi official	③	×1	√	M.2 M	3.0×2	×2	×2	ML/CR1220	√	5V	Official IO base board
Note	① USB 3.0 is equivalent to USB 3.2 Gen1. ② Unless otherwise specified, the Fan header usually is JST-SH type connector. ③ There's PoE header only on the Raspberry Pi official IO board without PoE circuit, which means additional PoE module is required for the official IO board to enable PoE feature. Unless otherwise specified, the PoE feature here stands for integrating 802.3af-compliant PoE circuit (5V/2.5A).

Connecting with Compute Module 5

standard CM5 socket and color-coded Raspberry Pi 40PIN GPIO header
suitable for Compute Module 5 Lite/eMMC series module

Compact, yet Complete

onboard multiple connectors, more convenient to use

Precise cut-out with clear label

each cut-out is completely aligned with the connector

 

Cooling fan included

comes with cooling fan, combined with the airflow vent, better heat dissipation

Wall-mount & Rail-mount support

comes with wall-mount brackets and rail-mount buckle for more flexible installation

Wall-mount Installation

 

Rail-mount Installation

Onboard EEPROM and encryption chip

Provides fast and secure symmetric authentication

Access to USB HDMI Adapter

CM5-IO-BASE-B connecting with USB HDMI Adapter

  

CM5-IO-BASE-BOX-B connecting with USB HDMI Adapter

 

* for reference only, the CM5 and USB HDMI Adapter are NOT included.

What's On Board

1. CM5 socket
   suitable for all variants of Compute Module 5
2. 40PIN GPIO header
   for connecting various HAT / HAT+ modules
3. Power input/Programming
   5V / 5A power supply, or used for eMMC burning
4. Encryption chip (ATSHA204)
   Supports fast and secure symmetric authentication
5. PSW Power button
   Long press to force power off, short press to soft power off or on
6. STAT LED
   Dual-color status LED
7. BOOT button
   Press before powering on and release after powering on to enter the burning mode
8. Dual MIPI interfaces
   for connecting DSI displays and CSI cameras
9. HDMI0 connector
   HDMI0 port, supports 4K output
10. USB 3.2 Gen1 ports
    2x USB 3.2 Gen1 high-speed ports, supports 5Gbps synchronous operation
11. RJ45 Gigabit Ethernet port
    Supports 10M / 100M / 1000M network access

 

12. 4PIN JST-SH PWM Fan header
    for connecting cooling fan, 5V power supply
13. TF card slot
    for connecting a TF card with pre-burnt image (Lite variant ONLY)
14. IO-VREF selection
    CM5 IO logic level: 3.3V (default) or 1.8V
15. Other function pins
    WIFI / BT hardware disable or write protection
16. HDMI1 FFC connector
    HDMI1 port, supports 4K output, can be connected through an adapter
17. USB 2.0 FFC connector
    can be connected through an adapter
18. RTC battery holder
    Supports CR / ML1220 button cell
19. M.2 M KEY
    Supports 2230/2242 NVMe Solid State Drives and booting Pi5 from solid state drive
20. I2C selection
    switching I2C0 and I2C1 (by default) for the encryption chip and EEPROM
21. CAT24C32
    EEPROM chip

Application example

for reference only, the CM5, displays, and cameras are NOT included.

Outline dimensions

CM5-IO-BASE-B

  

with metal case

 

Resources & Services

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WIKI: www.waveshare.com/wiki/CM5-IO-BASE-B

Balenie Obsahuje / Package Content

CM5-IO-BASE-BOX-B

1. CM5-IO-BASE-B x1
2. Metal case (top and bottom) x1
3. Antenna connector rubber plug x1
4. EVA foam pad x1
5. CM5-FAN-4010-5V x1
6. Rail-mount buckle x1
7. Screws pack x1
8. Screwdriver x1
9. 27W Power Supply x1