Template: CM4 DUAL ETH MINI
Overview
CM4-DUAL-ETH-MINI, a baseboard that can be used with Raspberry Pi Compute Module 4, supports 5V DC Type-C interface power supply and features dual Gigabit Ethernet ports, single-channel USB2.0 with a fan interface and standard Raspberry Pi 40Pin interface, which is suitable for scenarios requiring multiple network ports such as soft routing.
Caution
1. Do not plug or unplug any device other than a USB while it is powered on.
2. Confirm the fan voltage before connecting, only 5V fans are supported.
3. The Type C interface can be used as a power supply or as a USB interface to program the image (need to use the DIP switch to switch).
4. To ensure the normal power supply for CM4, please do not connect other devices when using the Type C interface to program the image.
5. When CM4 is in normal use, it needs to provide 5V/2A power supply for CM4. Otherwise, there may be problems such as automatic shutdown, frequency reduction, and so on.
6. USB2.0 is closed by default, if you want to open it, you need to add "dtoverlay=dwc2, dr_mode=host" in config.txt.
7. For Opwenwrt, see the instructions for use.
8. This expansion board does not support the POE function.
Dimension
- CM4-DUAL-ETH-MINI
- Compute_Module 4
What's on Board
| Label | Name | Description | |
| 1 | 40PIN GPIO header | For connecting various HAT modules | |
| 2 | CM4 Connector | Applies to all versions of Compute Module 4 | |
| 3 | RJ45 Gigabit Ethernet port | Dual RJ45 Gigabit Ethernet port, support 10/100/1000M network access ETHERNET 0: CM4 network port ETHERNET 1: PCIe expansion network port | |
| 4 | USB 2.0 Type-A port | supports various USB devices | |
| 5 | FAN interface | 5V four-wire SH1.0 interface, supports speed measurement and speed regulation | |
| 6 | Reset button | Reset | |
| 7 | BOOT switch | ON: CM4 boots to USB Type C port OFF: CM4 boots to eMMC or Micro SD | |
| 8 | Type-C interface | 5V/2.5A power supply port, can also be used as an eMMC programming interface | |
| 9 | Micro SD Card Interface | For a Micro SD card with the system to start the Compute Module 4 Lite | |
| 10 | RTL8111H | Gigabit LAN chip | |
| 11 | Indicator | PWR: Indicates the power status of the Raspberry Pi SYS: Indicates the working status of the Raspberry Pi | |
| 12 | SYSTEM switch | EEPROM_WP: prevent EEPROM from being overwritten WiFi_DIS: WiFi disabled, only for CM4 version with antenna BT_DIS: Bluetooth disabled, only for CM4 version with antenna |