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

1. CM4 socketsuitable for all variants of Compute Module 4
2. Power input/Programming5V/2.5A power supply, or used for eMMC burning
3. DISPMIPI DSI display port
4. FANfor connecting cooling fan, allows speed adjustment and measurement
5. CAM2x MIPI CSI camera ports
6. HDMI0 connectorHDMI0 port, supports 4K 30fps output
7. USB 2.0 ports2x USB 2.0 ports, for connecting sorts of USB devices
8. Gigabit Ethernet connectorGigabit Ethernet RJ45 connector, with 10 / 100 / 1000M network support
9. M.2 indicatorindicating the operating status of M.2 interface
10. ACT indicatorindicating the operating status of Raspberry Pi
11. PWR indicatorindicating the status of Raspberry Pi power supply
12. BOOT selectionON: CM4 would be booted from USB-C interface

    OFF: CM4 would be booted from eMMC or Micro SD card

13. 40PIN GPIO header
14. Micro SD card slotfor connecting a Micro SD card with pre-burnt image (Lite variant ONLY)
15. HDMI1 FFC connectorHDMI1 port, supports 4K 30fps output
16. USB 2.0 FFC connectorcan be connected through an adapter
17. FE1.1SUSB HUB chip, expanding one USB port to 4x ports
18. M.2 slotsupports sorts of NVME SSD, or communication modules with PCIE M.2 KEY-M interface
19. RTC chipallows RTC-related functions like wakeup, shutdown, reboot, and more
20. RTC interrupt selectionPI-RUN: CM4 reboot on RTC interruption

    GN-EN: CM4 shutdown on RTC interruption

    D4: D4 pin is triggered on RTC interruption

21. EMC2301fan controller, for speed adjustment / measurement
22. RTC battery holdersupports CR1220 button cell

Package Content: 

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