Mini Base Board (B) Designed for Raspberry Pi Compute Module
Compute Module 4/4S

Mini Base Board (B) Designed for Raspberry Pi Compute Module

$27.99 - $43.99

Details

Mini Base Board/Mini-Computer Full Version, Designed for Raspberry Pi Compute Module 4, USB HDMI Adapter Optional
Mini Base Board for Compute Module 4
Designed For Raspberry Pi Compute Module 4

Waveshare CM4-IO-BASE-B (Full Ver.) Inside, Fast And Easy To Build A Mini-Computer



Version Options

* Please refer to the part list for detailed package content

Mini Base B Full Ver
the CM4-IO-BASE-B bare board only

Mini-Computer Kit
In addition to the CM4-IO-BASE-B base board, it is equipped with an Aluminum Alloy case, power supply and fan, etc.

More Available Kits

CM4-IO-BASE-B + USB HDMI Adapter
Expanding additional 2x USB And 1x HDMI Connectors Via FFC, in addition to the CM4-IO-BASE-B base board, it is equipped with a USB HDMI Adapter, FFC Cable and USB Cable, etc


Mini-Computer Kit + USB HDMI Adapter
Expanding additional 2x USB And 1x HDMI Connectors Via FFC, in addition to the CM4-IO-BASE-B base board, it is equipped with an Aluminum Alloy case, USB HDMI Adapter, 5V 3A power supply, FFC Cable and USB Cable, etc


Optional Black Metal Case

make it easy to build your own Raspberry Pi CM4 mini PC

for reference only, CM4 and antenna are NOT included.
Specifications
CM4 socket suitable for all variants of Compute Module 4
Networking Gigabit Ethernet RJ45 connector
M.2 M KEY, supports communication modules or NVME Solid State Drives
Connector Raspberry Pi 40PIN GPIO header
USB USB 2.0 Type A × 2, USB 2.0 via FFC connector × 2
Display MIPI DSI display port (15pin 1.0mm FPC connector)
Camera MIPI CSI-2 camera port × 2 (15pin 1.0mm FPC connector)
Video HDMI port × 2 (including one port via FFC connector), supports 4K 30fps output
RTC Real-time clock with battery socket and ability to wake Compute Module 4
Storage TF card socket for Compute Module 4 Lite (without eMMC) variants
Fan header allows speed adjustment and measurement, 5V
Power input 5V
Dimensions 85 × 56mm

What's the differences
CM4 Base Board Interface count and specifications
PoE Gigabit
ETH		 40PIN
GPIO		 PCIe USB① DSI HDMI CSI RTC Fan
Header		 Power
Input		 Features

NANO A		   √   2.0×1     ×1   5V CM4 sized

NANO B		 ×1 √   2.0×1 ×1 ×1 ×1   5V CM4 sized

NANO C		 √   2.0×1 ×1 ×1 ×1   5V Onboard Camera

mini Base A		 ×1 √ M.2 M 2.0×4 ×1 ×2 ×2 5V 5V mini size

mini Base B		 ×1 √ M.2 M 2.0×4 ×1 ×2 ×2 √ 5V 5V mini size

mini Base C		 ×1 √ M.2 M 2.0×2 ×1 ×2 √ 5V 5V Dedicated 40PIN LCD Connector

Touch screen		 ×1   M.2 M 2.0×4   ×1 ×1     5V IPS screen

Mini Dual Gigabit		 ×2 √   2.0×1         5V SH1.0 5V dual ETH

Binocular camera		 ×1 √ M.2 M 2.0×4   ×2       5V dual 8MP
cameras

4CH RS485		 ×1     2.0×2   ×1 ×2 ×1 5V 7-36V dual ETH

WIFI6 DUAL ETH		 ×1 √ M.2 E 2.0×3 ×1 ×2 ×2 ×1 5/12V 7-36V WIFI6 dual ETH

Dual Gigabit ETH		 ×2 √ 3.0×3 ×1 ×2 ×2 √ 5/12V 7-36V

IoT Dual Gigabit ETH		 ×2 √ 3.0×2 ×1 ×2 ×2 √ 5/12V 5V 5G/4G support

IoT Base		 √ ×1 Gen2×1 2.0×2 ×2 ×2 ×2 √ 5/12V 7-36V 5G/4G support
RS232
RS485
ADC

PoE Base (B)		 √ ×1 √ Gen2×1 2.0×4 ×2 ×2 ×2 √ 5/12V 5V RS232
RS485

PoE UPS Base		 √ ×1 √ M.2 M 2.0×4 ×1 ×2 ×2 √ 5/12V 7-36V UPS

PoE Base		 √ ×1 √ 3.0×4 ×2 ×2 ×2 √ 5/12V 7-36V

Raspberry Pi official		 ② ×1 √ Gen2×1 2.0×4 ×2 ×2 ×2 √ 12V 12V

Wireless base		   ×1   M.2 B /
Mini-PCIe		 2.0×3   ×1 ×1 √ 5/12V 5V or
7-36V		 5G/4G support
RS485
CAN
rail-mount

UPS Wireless base		   ×1   M.2 B 2.0×3   ×1 ×1 √ 5/12V 5V or
7-36V		 With UPS
5G/4G support
RS485
CAN
rail-mount

NAS Mini Computer		   ×2 √ M.2 M×2/
Mini-PCIe		 3.0×2   ×2 ×2 √   5V dual M.2 M KEY slots

5″ touch screen		 ② ×1 √ M.2 M 2.0×4   ×1 ×2 √ 5/12V 5V  

7″ all-in-one		   ×1   M.2 M 2.0×4 used ×1 used √ 5/12V
used		 7-36V touch screen
camera
speaker

13.3″ all-in-one		   ×1     2.0×2           12V HD touch screen

13.3″ Magic Mirror		   ×1     2.0×2           12V HD screen,
Speech Assistant
Note ① USB 3.0 is equivalent to USB 3.2 Gen1
② There's PoE header only on the Raspberry Pi official IO board without PoE circuit, that 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).

Compact, yet Complete

onboard multiple connectors including:
CSI/DSI/RTC/FAN/HDMI/USB/RJ45 Gigabit Ethernet/TF Card Slot/M.2 Slot


Precise cut-out with clear label

each cut-out is completely aligned with the connector

Access to USB HDMI Adapter

More USB And HDMI Connectors Via FFC


Cooling fan included

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


Wall mount support

wall mount holes on two sides, handy for mounting


What's On Board
  1. CM4 socket
    suitable for all variants of Compute Module 4
  2. Power input/Programming
    5V/2.5A power supply, or used for eMMC burning
  3. DISP
    MIPI DSI display port
  4. FAN
    for connecting cooling fan, allows speed adjustment and measurement
  5. CAM
    2x MIPI CSI camera ports
  6. HDMI0 connector
    HDMI0 port, supports 4K 30fps output
  7. USB 2.0 ports
    2x USB 2.0 ports, for connecting sorts of USB devices
  8. Gigabit Ethernet connector
    Gigabit Ethernet RJ45 connector, with 10 / 100 / 1000M network support
  9. M.2 indicator
    indicating the operating status of M.2 interface
  10. ACT indicator
    indicating the operating status of Raspberry Pi
  11. PWR indicator
    indicating the status of Raspberry Pi power supply
  12. BOOT selection
    ON: CM4 would be booted from USB-C interface
    OFF: CM4 would be booted from eMMC or TF card
  1. 40PIN GPIO header
  2. TF card slot
    for connecting a TF card with pre-burnt image (Lite variant ONLY)
  3. HDMI1 FFC connector
    HDMI1 port, supports 4K 30fps output
  4. USB 2.0 FFC connector
    can be connected through an adapter
  5. FE1.1S
    USB HUB chip, expanding one USB port to 4x ports
  6. M.2 slot
    supports sorts of NVME Solid State Drives, or communication modules with PCIE M.2 KEY-M interface
  7. RTC chip
    allows RTC-related functions like wakeup, shutdown, reboot, and more
  8. RTC interrupt selection
    PI-RUN: CM4 reboot on RTC interruption
    GN-EN: CM4 shutdown on RTC interruption
    D4: D4 pin is triggered on RTC interruption
  9. EMC2301
    fan controller, for speed adjustment / measurement
  10. RTC battery holder
    supports CR1220 button cell


Application example

Suitable for binocular Vision Raspberry Pi Projects


Access to more peripherals via USB HDMI Adapter


Working With Additional Solid State Drives


for reference only, display, cameras, antenna and Solid State Drives are NOT included.

Product show


Outline dimensions

Resources & Services

* Resources for different product may vary, please check the wiki page to confirm the actually provided resources.

Quick Overview

CM4-IO-BASE-B

  1. CM4-IO-BASE-B x1
  2. Solid State Drives mounting screw x1
1
2

CM4-IO-BASE-BOX-B

  1. CM4-IO-BASE-B x1
  2. Metal case (top and bottom) x1
  3. Fan-4010-PWM-5V x1
  4. OPTIONS 5V 3A USB-C power adapter x1
  5. Screwdriver x1
  6. Screws pack x1

CM4-IO-BASE-Acce B

  1. CM4-IO-BASE-B x1
  2. USB HDMI Adapter x1
  3. FFC cable 6PIN 1.0 pitch 60mm x1
  4. FFC cable 20PIN 0.5 pitch 60mm x1
  5. USB-A to USB-C cable 1m x1
  6. Solid State Drives mounting screw x1

CM4-IO-BASE-Acce D

  1. CM4-IO-BASE-B x1
  2. Metal case (top and bottom) x1
  3. USB-A to USB-C cable 1m x1
  4. USB HDMI Adapter x1
  5. FFC cable 6PIN 1.0 pitch 60mm x1
  6. FFC cable 20PIN 0.5 pitch 60mm x1
  7. Fan-4010-PWM-5V x1
  8. OPTIONS 5V 3A USB-C power adapter x1
  9. Screws pack x1
  10. Screwdriver x1