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WSAL23589 – CM4-DUAL-ETH-WIFI6-BASE/en

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Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

Summary

Carrier board for the Raspberry Pi Compute Module 4 with dual Ethernet, Wi‑Fi 6 and an M.2 E‑Key slot; supports 7–12 V DC power supply.

Related products at JW Tech

Technical overview

  • Compatible with all versions of the Raspberry Pi Compute Module 4 (module not included).
  • Two RJ45 Gigabit Ethernet ports (10/100/1000 Mbps) plus one additional 100 Mbps Ethernet port via a USB hub chip RTL8152.
  • Three USB 2.0 ports for peripherals.
  • M.2 E-Key slot supports 2230 and 2240 form factors; according to the FAQ it is intended for Wi‑Fi cards, not NVMe or SSDs.
  • Dual HDMI outputs supporting 4K@30 fps; enabling DSI disables one of the HDMI outputs.
  • Dual MIPI CSI camera ports and a MIPI DSI display port (DISP1).
  • RTC over I²C (chip PCF85063A, address 0x51); default bus is I²C1; enable via dtparam=i2c_arm=on and dtoverlay=i2c-rtc,pcf85063a in /boot/config.txt.
  • Fan driven by PWM on GPIO18; supply voltage selectable between 5 V and 12 V via resistor selection (default 12 V).

Commands and examples – verify before use:  

sudo nano /boot/config.txt
dtparam=i2c_arm=on
dtoverlay=i2c-rtc,pcf85063a
sudo hwclock -w
sudo hwclock -s
sudo hwclock --set --date="9/8/2021 16:45:05"
sudo hwclock -r
libcamera-hello --list-cameras
libcamera-hello -t 0
libcamera-jpeg -o test.jpg
libcamera-vid -t 10000 -o test.h264
sudo dtc -I dts -O dtb -o /boot/dt-blob.bin dt-blob-disp0-double_cam.dts
sudo raspivid -t 0 -cs 0
sudo raspivid -t 0 -cs 1

Notes and version constraints

  • No PoE support on this board.
  • Power supply: at least 12 V / 1.5 A required during normal operation, otherwise automatic shutdown or clock throttling may occur.
  • Only USB and HDMI devices may be unplugged while powered on; disconnect all other interfaces only after powering down.
  • The Type-C port is solely a USB slave port for image flashing and cannot be used as a power input.
  • Compatibility of specific camera sensors with the new Bookworm system must be verified per sensor; the source lists supported sensors but does not cover every available model.
  • With an OpenWrt install, IP addresses and credentials depend on configuration; the listed defaults apply only to the shipped image.
  • Changes to FAN_VCC resistors or RTC I²C bus selection are hardware-level modifications requiring manual intervention on the board.

Source and revision record

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