Features: Brand new and high quality Provides variety interfaces such as USB connectors, Ethernet port, GPIO, I2C, and RS485 interfaces. Onboards M.2 slot with adapter board for installing WiFi or 4G module (choose one of two), with metal case, suitable for various applications. Suitable for face recognition, road sign recognition, and license plate recognition(the binocular camera is NOT included) Internal reserved heat sink installation space can be used together with heat sinks Equipped with rail installation holes, and the host can be installed on the rail by installing the rail clip(the rail buckle is NOT included) Specifications: Material:Metal+PCB Size:Approx.113x65mm/4.44x2.56inch Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Expansion Board