durable and easy to install. Fine workmanship and perfect style. CM4 card holder is suitable for all versions of Compute Module 4 Networking: Gigabit Ethernet RJ45 interface x 2 (native network port ETH0, PCIE extended network port--ETH1), MINI PCIE, supports 4G module (USB protocol, does not support PCIE protocol) , Nano-SIM card slot, can accept standard Nano-SIM card, used for 4G, 3G, 2G. M.2: Dual-way NVME SSD connection (2230, 2242, 2260, 2280) USB: USB 3.2 Gen1 (5Gbps) interface x 2 Camera: MIPI -2 interface x 2 (15PIN 1.0mm FPC connector) Video: -compatible interface x 2, supports 4K 30fps output Audio: 3.5mm headset microphone, headset two-in-one interface Storage: Onboard TF card slot (for versions without eMMC) Power input: type-c (5V 4A) Material: abs colour: Black Package Contents: 1 set multi-function host (Shipped in bulk) 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.