CM4 Mini Computer for RPi for Compute Module 4 Dual Gigabit Network Port Metal Shell Mini PC Item Type: CM4 Mini Computer Material: Aluminum Alloy, PCB CM4 Card Holder: Suitable for All Versions of for Compute Module 4 Networking: Gigabit Ethernet RJ45 Interface x2 (Native Network Port ETH0, PCIE Extended Network Port ETH1); MINI PCIE, Support 4G Module (USB Protocol, Does Not Support PCIE Protocol); Nano SIM Card Slot, Can Access Standard Nano SIM Card, for 4G/3G/2G Internet Access M.2 Dual: NME SSD Interface (2230, 2242, 2260, 2280) USB: USB3.2 Gen1 (5Gbps) Interface x2 Camera: MIPI CSI 2 Interface x2 (15PIN 1.0mm FPC Connector) Video: HD Multimedia Interfacex2, Supports 4K 30fps Output Audio: 3.5mm Headset/Microphone, Headset Two in One Interface Real Time Clock: With Battery Interface and Wake Up Capability for Compute Module4 On Board Memory Card Slot for Storage (For Versions Without for eMMC) Memory Card Support Up to: 256G (Not Included) Coin Cell Battery: 1 CR1220 (Not Included)