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

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


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Mini Base Board For Compute Module 4.
Suitable For Evaluating The Raspberry Pi CM4 Or Being Integrated Into End Products.
Onboard Multiple Connectors Including:

CSI/DSI/RTC/FAN/HDMI/USB/RJ45 Gigabit Ethernet/Micro SD Card Slot/M.2 Slot.

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 Micro SD card

  1. 40PIN GPIO header
  2. Micro SD card slot

    for connecting a Micro SD 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 SSD, 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

Package Content: 

  1. CM4-IO-BASE-A x1
  2. SSD mounting screw x1


Additional information




Compute Module 4