Features 1、TWO M.2 M KEY INTERFACES: Dual gigabit ethernet mini computer has two built in M.2 M KEY interfaces for installing NVME solidly state drives. 2、MINI PCIE INTERFACE: Multi functional mini computer has a built in MINI PCIE interface for installing 4G modules. 3、4K OUTPUT: dual HD multimedia interface 4K output, support USB3.2, RTC, dual Gigabit LAN port, 3.5mm headset and other interfaces. 4、ON BOARD AUDIO MODULE: Mini computer does not need network and storage system, and on board infrared, audio and other modules. 5、APPLICABLE SCENARIOS: Mini computer is an all in one host designed primarily for use in a home environment or small office, but is not limited to these scenarios. Specification 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) Package List 1 x CM4 Host Computer 4 x Aluminum Alloy Shell 1 x Flat Head Self Recovery Button 12mm (With Light with Four Lines) 5 x Thermal Silicone 2 x Buckle Plug Head 1 x Screw Kit 1 x Screwdriver 1 x Fan