CM4 card holder: applicable to all versions of Compute Module 4Connector: M.2 M KEY, supporting communication module or NVME solid state ; for GPIO interfaceUSB: USB 2.0 Type A interface x oneCamera: MIPI CSI-2 interface x 1 (15pin 1.0mm FPC connector)Video: -compatible interface x 1. Support 4K 30fps outputStorage: onboard -SD card slot (for versions without eMMC)Power input: 5VSize: 73.58 x 53.34mmMaterial: PCB+metalcolour: blackPackage Contents:1 x CM4-Duino Expansion boardOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.