Waveshare Mini Base Board Type B for Raspberry Pi Compute Module 4

NETWORKING: Giga-bit Ethernet RJ45 connector, M.2 M KEY, supports communication modules or NVME ; CONNECTOR: Pi 40PIN GPIO header; Real-time clock with battery socket and ability to wake Compute Module 4
Onboard USB 2.0 Type A × 2, USB 2.0 via FFC connector × 2, MIPI DSI display port (15pin 1.0mm FPC connector), MIPI CSI-2 camera port × 2 (15pin 1.0mm FPC connector), HDMI port × 2 (including one port via FFC connector), supports 4K 30fps output
Do not plug and unplug any device except USB and HDMI while the baseboard is working. This model only supports a 5V fan and cannot work with the 12V fan. Please confirm the fan voltage before connecting
When using the M.2 interface, please use the matching screws. Using screws of other lengths may cause the CM4 core to be damaged by the screws. The module doesn't have any protection circuit, please do not short-circuit the power supply
The module doesn't have any protection circuit, please do not short-circuit the power supply. USB2.0 is closed by default, if you need to open it, you need to add dtoverlay=dwc2,dr_mode=host in config.txt. This expansion board does not support the POE function. There is more details, please refer to the online user manual while using