Mini Base Board for Raspberry Pi Compute Module 4, with Standard CM4 Socket and Raspberry Pi 40 PIN GPIO Header, Onboard Multiple Connectors, Suitable for Compute Module 4 Lite/EMMC Series Module

Introduction
CM4-IO-BASE-B is an IO board designed for Raspberry Pi Compute Module 4, it can be used with all versions of CM4, suitable for evaluating the Raspberry Pi CM4 or beingintegrated into end products.
Mini base board (85x56mm) for Raspberry Pi CM4 features PoE function, with standard CM4 socket and color-coded Raspberry Pi 40 Pin GPIO header, suitable for Compute Module 4 Lite/EMMC series module.

Note
1. Do not plug and unplug any device except USB and HDMI while the baseboard is working.
2. This model only supports a 5V fan and cannot work with the 12V fan. Please confirm the fan voltage before connecting.
3. The DSI Display Port is connecting the DSI0 interface of the CM4, and doesn't use the DSI1 display interface.
4. The Type C interface can be used for the power supply or USB SLAVE interface for burning the image.
5. In order to ensure the normal power supply of CM4, please do not connect other devices when using the Type C interface to burn the image.
6. It needs to use a 5V 2A power supply for CM4. Otherwise, problems such as automatic shutdown, frequency reduction, etc. may occur.
7. When using the M.2 interface, please use the matching screws. Using screws of other lengths may cause the CM4 core to be damaged by the screws.
8. The module doesn't have any protection circuit, please do not short-circuit the power supply.
9. USB2.0 is closed by default, if you need to open it, you need to add dtoverlay=dwc2,dr_mode=host in config.txt.
10. The HDMI1 can be used by a flat cable output, if you need to use it, you can purchase an HDMI adapter.
11. If you need to use USB3/4 and HDMI1 port at the same time, you can purchase a USB HDMI Adpter.
12. This expansion board does not support the POE function.

Package Content
1. CM4-IO-BASE-Bx1
2. Mounting screw x1