Template: CM4-DISP-BASE-2.8A Spec

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This product is a specially designed 2.8-inch CM4 touch screen expansion board for Raspberry Pi Compute Module 4. CM4-DISP-BASE-2.8A is a baseboard that can be used with Raspberry Pi Compute Module 4, using 5V/ 2.5A USB Type Powered by the C interface, it can be directly connected to the CM4 core board, equipped with a 2.8-inch IPS display, which can meet the operation of various versions of CM4, and supports camera and video output.


1: The display uses the DIP interface instead of the HDMI interface.
2: Please use a 5V/4A or higher power adapter.


Compute Module 4 IO Board 5,png.png

Touch Screen Expansion Board

Label Name Description
1 CM4 Connector Applies to all versions of Compute Module 4
2 CAM Interface 22PIN MIPI CSI Camera Interface
3 Power supply/burning interface 5V/2.5A power supply, can also be used as eMMC programming interface
4 USB 2.0 interface USB 2.0 interface, support various USB devices to be inserted
5 HDMI1 port Micro HDMI port, support 4K 30fps output
6 BOOT ON: CM4 USB Type C boot boot
OFF: eMMC or SD card boot boot
7 Interface Expansion Including Gigabit Ethernet, PCIE, USB and other interfaces

Optional Interface Expander Introduction

Label Name Description
1 USB 2.0 interface 3-channel USB 2.0 interface, support various USB device
2 M.2 M KEY interface Suitable for NVIE SSD, or communication module supporting PCIE M.2 interface
3 Gigabit Ethernet port RJ45 Gigabit Ethernet port, support 10 / 100 / 1000M network access
4 M.2 LED M.2 indicates the working status of the interface
5 Interface Access Extended Interface Access