Mini Base Board for Raspberry Pi Compute Module 4 Lite/EMMC Series Module, with CM4 Socket, Raspberry Pi 40PIN GPIO Header, and Multiple Connectors, for Evaluating CM4 or Integrated into End Product

• Mini base board designed for Raspberry Pi Compute Module 4, suitable for evaluating the Raspberry Pi CM4 or being integrated into end products.
• Standard Raspberry Pi CM4 socket and color-codedRaspberry Pi 40 pin gpio header, suitable for Compute Module 4 Lite/EMMC series module.
• Onboard multiple connectors including: CSI/DSI/RTC/FAN/HDMI/USB/RJ45 Gigabit Ethernet/Micro SD Card Slot/M.2 Slot. The DSI display interface is the DSI0 interface, and the DSI1 display interface is not connected.
• FAN fans only support 5V fans, 12V is not supported, confirm the fan voltage before connecting.Outline Dimensions: 85x56mm.
• Comes with mounting screw, easy to install. When using the M.2 interface, please use the matching screws.

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. Precautions for Use 1. This model only supports a 5V fan and cannot work with the 12V fan. Please confirm the fan voltage before connecting. 2. The DSI Display Port is connecting the DSI0 interface of the CM4, and doesn't use the DSI1 display interface. 3. The Type C interface can be used for the power supply or USB SLAVE interface for burning the image. 4. 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. 5. It needs to use a 5V 2A power supply for CM4. Otherwise, problems such as automatic shutdown, frequency reduction, etc. may occur. 6. 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. 7. The module doesn't have any protection circuit, please do not short-circuit the power supply. 8. USB2.0 is closed by default, if you need to open it, you need to add dtoverlay=dwc2,dr_mode=host in config.txt. 9. HDMI1 uses a flat cable output, if you need to use it, you can purchase an HDMI adapter. 10. This expansion board does not support the POE function. Development Resources https://www.waveshare.com/wiki/CM4-IO-BASE-B?Amazon Package Content 1. CM4-IO-BASE-Bx1 2. Mounting screw x1