This product is a MINI board for Raspberry Pi Compute Module 5. CM5-DUAL-ETH-MINI is a baseboard that can be used with for Raspberry Pi Compute Module 5 Supports dual network ports and Type C 5V 5A DC power supply Onboard 1-way USB3.2 Gen1, convenient for users to use Type C is used as a USB SLAVE interface to burn images, cannot be used as an OTG interface, and cannot supply power to the outside Onboard button connects to BOOT. You can press and hold the BOOT button before powering on, connect the computer via Type C, and put the device into burning mode CM5 card holder: for all versions of Compute Module 5 Ethernet: Dual Gigabit Ethernet RJ45 interface USB: USB 3.0 interface Connector: for Raspberry Pi 40PIN GPIO interface Storage: Onboard Micro-SD card slot (only for versions without eMMC) Fan interface: Four-wire SH1.0 interface, adjustable speed, measurable speed, 5V Power input: 5V, Type-C interface (The product appearance and printed words may vary depending on the batch, but this does not affect use) Colour: Black Material: PCB Package Contents: 1 x Expansion Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.