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Product Overview

The AIO-CM4-156 industrial Pi PC (PN: CS19108RA4156A) is an all-in-one desktop computer based on Raspberry Pi® CM4. It features a 15.6” IPS display with a maximum brightness of 350 cd/m2.

The product is easy to use, perfect for developers and makers accustomed to the Raspberry Pi and is looking for a computer they can use daily. It is fully compatible with the Raspberry Pi 4 Linux distribution.

Ordering Options

Chipsee products can be customized during the ordering process. The product will be shipped with the pre-installed factory defaults if no extra requirements are specified. The table in the Hardware Features section provides information about the default options bundled with the product.


You can order AIO-CM4-156 from the official Chipsee Store or from your nearest distributor.

Pi® CM4 Module

The Pi® Compute Module 4 appears in different versions depending on the size of the DDR4 and eMMC.
The AIO-CM4-156 industrial Pi PC does not include the CM4 Raspberry Pi® module by default. If you would like to purchase it with a CM4, you can select it at the Chipsee store during the ordering process.

Operating System

This product comes with a pre-installed Raspberry Pi OS or Ubuntu OS. Chipsee software engineers have created all the drivers, so every hardware feature is readily available for any standard development tool.

If your project requires a different OS, please Contact us, and we’ll make a customized version that suits your needs.

Optional Features

The AIO-CM4-156 industrial Pi PC does not include the 4G/LTE modules by default. These modules are optional and can be selected at the Chipsee store during the ordering process.


Installation, repair, and maintenance tasks should be performed by trained personnel only.
Chipsee does not bear any responsibility for damage caused by inadequate handling of the product.

Hardware Features

The AIO-CM4-156 industrial Pi PC offers a board range of performance and connectivity options for scalable integration, providing expandability according to future needs. Some of the key features are listed in the table below.

Table 381 Key Features



Raspberry Pi® CM4, CM4 Lite; Quad Cortex-A72 at 1.5GHz


1 x TF card slot for boot. Optional, Internal M.2 NVMe connector for SSD card






15.6” IPS LCD, 1920 x 1080 resolution px, brightness 350 cd/m2


Optional, 10-point capacitive touch with 1.1mm Armored Glass


2 x USB 3.0 Host, 1 x Type-C USB (Slave)


1 x Channel Giga LAN


2W internal stereo speaker, 3.5mm audio Out connector


Internal Buzzer


Yes, High accuracy internal RTC (keep track of time one week after power off)








40-pin GPIO connector


WiFi/BT module comes with the CM4

HAT Connector

Standard Raspberry Pi 40-way HAT connector

Micro SD card socket

For use only with CM4 Lite modules




HDMI 2.0 connectors, slave HDMI port for CM4



Power Input


Current at 12V

700mA Max

Power Consumption

10W Typical

Working Temperature

From 0°C to +50°C


Raspberry Pi OS, Ubuntu


374 x 238 x 33mm



Plastic Case Color





RAM can be 1/2/4/8GB based on CM4 Lite onboard.

Power Input

The AIO-CM4-156 industrial Pi PC can be powered by an input voltage: 12V DC. The total power consumption is typically about 8.4W. The power input connector is a 2.1mm I.D x 5.5mm O.D x 9.5mm DC connector. For a proper DC power adapter, refer to the figure below.


Figure 999: Power Adapter

Buttons and Status LED

Status LED

This product has a status LED on the front panel. The LED turns RED after power on and GREEN when the system is booted. It can be controlled by software to flash YELLOW when the CPU is working.


Figure 1000: Status LED


There are five (5) buttons on the front panel: Brightness +, Brightness -, Volume +, Volume -, and Power, as the figure below shows.


Figure 1001: Buttons

The AIO-CM4-156 industrial Pi PC supports two (2) boot modes, the auto-boot and manual boot modes. The default boot mode is the auto-boot mode. You can change the boot mode by using Software or by pushing Volume + and Volume - buttons at the same time before power on and releasing it 3 seconds after power on to toggle, as the table below shows.

Table 382 Boot mode

Boot mode


Default Configuration

How to toggle


Auto boot after power on

Software control or Push Volume+ and Volume- buttons at the same time before power on, and release it 3 seconds after power on.


Boot after pushing the Power button and releasing it 3 seconds after power on

  • The AIO-CM4-156 industrial Pi PC boots from the internal eMMC by default. If you want it to boot from the Type-C connector, press and hold the Volume + button before power ON, and release it 3 seconds after power ON.

  • You can use Brightness + / Brightness - buttons to control the backlight of the LCD.

  • You can also use Volume + / Volume - buttons to control the System Volume.

For a detailed explanation of button functions, check the table below.

Table 383 Boot mode


Functions before the system boot

Functions after the system boot


Push after power on and release after 3 seconds will boot the system

Push after the system booted and release after 3 seconds will close the system.

Brightness +


Increase the brightness of LCD

Brightness -


Reduce the brightness of LCD

Volume +

Push before power on and release it after 3 seconds, the system will boot from the Type-C port

Increase the volume of the system

Volume -


Reduce the volume of the system

Volume + and Volume -

Toggle the boot mode



There are many connectivity options available on the AIO-CM4-156 industrial Pi PC. It has 2 x USB 3.0 Host, 1 x Type-C USB (Slave), 1 x Channel Giga LAN (RJ45) Ethernet connector supporting up to 1 Gbps, and RS232+RS485+Relay connector.

USB HOST and Type C

There are 2 x 3.0 USB HOST connectors and 1 x Type-C Connector onboard, as shown on the figures below.


Figure 1002: USB3.0 HOST and Type-C Connectors


  • External USB peripherals like a USB disk or USB mouse or keyboard can connect to the USB3.0 HOST.

  • You can download software to the Raspberry Pi CM4 eMMC using the Type-C.

  • When you connect the Type-C to a device, it will disable the USB HOST.

LAN Connectors

LAN (RJ45) connector provides Ethernet connectivity over standardized Ethernet cables as shown the figure below. The integrated Ethernet interface supports up to 1 Gbps data throughput. These Giga LAN signals come from the CM4 module directly.


Figure 1003: RJ45 LAN Connectors


Use CAT5 or better cables to achieve full data throughput over maximum distance defined by the 1000BASE-T standard (100m).

TF Card Slot

The AIO-CM4-156 industrial Pi PC features 1 x TF Card (micro SD) slot that can only be used with CM4 Lite modules, as shown on the figure below.


Figure 1004: TF Card Slot


  1. The product does not come shipped with the TF Card by default.

Audio Out Connector

The product features audio Out connector as shown on the figure below.


Figure 1005: Audio Out Connector


The CM4 supports dual HDMI 2.0 connectors. The product uses the master HDMI for the LCD so, customers can use the slave HDMI port, as the figure below shows.


Figure 1006: HDMI Connector (slave)


The AIO-CM4-156 industrial Pi PC has a camera on the front panel but is not mounted by default.

40-Pin Expansion Connector

The AIO-CM4-156 industrial Pi PC has a standard Raspberry Pi 40 way HAT connector, as the figure below shows. You also can check Pinout for more details.


Figure 1007: 40-pin Expansion Connector

Raspberry Pi Hat adapter

The product also has an available I/O connector that is 100% compatible with any Raspberry Pi cape or extensions, making the AIO-CM4-156 a perfect fit with your existing tools.

The product also comes with an adapter with a standard Raspberry Pi HAT pin-out to add more flexibility to your project. It offers a convenient way to develop and test your hardware with all the connectors at hand. You can learn more about it in the product manual.


Figure 1008: Raspberry Pi Hat adapter

Mounting Procedure

You can mount AIO-CM4-156 with the Vesa (75 x 75mm) and Stand mounting methods, as shown in the figures below.


Figure 1009: VESA mounting


Figure 1010: Stand mounting


Please make sure the display is not exposed to high pressure when mounting into an enclosure.

You can find detailed information about mounting in the Mount IPC Guide.

Mechanical Specifications

The outer mechanical dimensions of AIO-CM4-156 are 374 x 238 x 33mm (W x L x H). Please refer to the technical drawing in the figures below for details related to the specific product measurements.


Figure 1011: Front Panel Dimension Technical Drawing


Figure 1012: Backside Dimension Technical Drawing


Figure 1013: Side Dimension Technical Drawing

3D Model

AIO-CM4-156 3D model can be viewed in the online doc in a web browser, if you are reading from the PDF version, please visit the online doc AIO-CM4-156, select hardware documentation, drag the navigation bar to the 3D Model section.


This document is provided strictly for informational purposes. Its contents are subject to change without notice. Chipsee assumes no responsibility for any errors that may occur in this document. Furthermore, Chipsee reserves the right to alter the hardware, software, and/or specifications set forth herein at any time without prior notice and undertakes no obligation to update the information contained in this document.

While every effort has been made to ensure the accuracy of the information contained herein, this document is not guaranteed to be error-free. Further, it does not offer any warranties or conditions, whether expressed orally or implied in law, including implied warranties and conditions of merchantability or fitness for a particular purpose. We specifically disclaim any liability with respect to this document, and no contractual obligations are formed either directly or indirectly by this document.

Despite our best efforts to maintain the accuracy of the information in this document, we assume no responsibility for errors or omissions, nor for damages resulting from the use of the information herein. Please note that Chipsee products are not authorized for use as critical components in life support devices or systems.

Technical Support

If you encounter any difficulties or have questions related to this document, we encourage you to refer to our other documentation for potential solutions. If you cannot find the solution you’re looking for, feel free to contact us. Please email Chipsee Technical Support at, providing all relevant information. We value your queries and suggestions and are committed to providing you with the assistance you require.