Template: CM4-DUAL-ETH-WIFI6-BASE Spec
Overview
Introduction
CM4-DUAL-ETH-WIFI6-BASE, the IO board of the Raspberry Pi Compute Module 4, is a carrier board that can be used with the Raspberry Pi Compute Module 4 and supports 7~12V DC power supply, and the board has three USB ports 2.0, WIFI6, dual Ethernet ports, suitable for soft routing and other scenarios that require multiple Ethernet ports.
Note
1. Do not unplug any device except USB and HDMI when the power is on.
2. Check the fan voltage before connecting. It supports 5V and 12V. The default connection is 12V. Before switching, please modify the resistance of FAN_VCC.
3. The Type C interface is only used as a USB SLAVE interface to burn images, and cannot be used as a power supply.
4. When CM4 is in normal use, it needs to provide at least a 12V 1.5A power supply. Otherwise, problems such as automatic shutdown and frequency reduction may occur.
5. See instructions for use about Opwenwrt.
6. This expansion board does not support the POE function.
Dimensions
CM4-DUAL-ETH-WIFI6-BASE
Compute_Module 4
Onboard Resources
| Label | Name | Description | |
| 1 | CM4 connector | for all versions of Compute Module 4 | |
| 2 | 40PIN GPIO header | easy to connect various HAT modules | |
| 3 | RJ45 Gigabit Ethernet port | RJ45 Gigabit Ethernet port, support 10/100/1000M network access ETHERNET 0: CM4 original network port ETHERNET 1: USB expansion network port | |
| 4 | RJ45 100M Ethernet port | RJ45 100M Ethernet port, support 10/100 network access ETHERNET 0: CM4 original network port ETHERNET 1: USB expansion network port | |
| 5 | USB 2.0 ports | 3-way USB 2.0 ports, supporting various USB devices | |
| 6 | M.2 connector | M.2 E KEY slot, support 2230 and 2240 | |
| 7 | HDMI port | Dual HDMI port, support dual 4K 30fps output | |
| 8 | RTC battery connector | can be connected to CR1220 button battery | |
| 9 | CAM port | Dual MIPI CSI camera port | |
| 10 | DC power header | 7~36V DC wide voltage power supply | |
| 11 | Double LEDs holder | Red light: Raspberry Pi power indicator Green light: Raspberry Pi working status indicator | |
| 12 | Micro SD card slot | It is used to insert the Micro SD card with the system to start Compute Module 4 Lite | |
| 13 | FAN header | Easy access to the cooling fan, support speed adjustment and measurement | |
| 14 | DISP1 port | MIPI DSI display port, DISP1 port | |
| 15 | USB SLAVE port | Compute Module 4 eMMC version can program the system image by this port | |
| 16 | 100M Ethernet port chip | RTL8152 100M network port chip |
| Label | Name | Description | |
| 17 | USB HUB | USB 2.0 HUB chip | |
| 18 | System function switching | BT_DIS: Disable Bluetooth, only for CM4 version with antenna WiFi_DIS: Disable WiFi, only for CM4 version with antenna WP_DIS: Prevent EEPROM from being rewritten | |
| 19 | IO-VREF selection | CM4 IO logic voltage switching 3.3V or 1.8V | |
| 20 | FAN Power Supply Selection | Optional 5V or 12V voltage to drive the fan | |
| 21 | RTC interrupt pin switch | PI-RUN: RTC trigger interrupt CM4 restart GN-EN: RTC trigger interrupt CM4 power off D4: RTC trigger interrupt D4 pin | |
| 22 | RTC/FAN I2C bus selection | SDA0/SCL0: shared by I2C-10 and CSI/DSI GPIO3/2: shared by I2C-1 and 40PIN |