Small smart factory data gateway, equipped with Intel Atom processor, 2 x GbE, 1 x mPCIe, HDMI, eMMC, compact fanless design, non-slip rubber plug design, and reserved screw holes inside the rubber plug for easy installation of expansion layers , support to expand a variety of system I/O and digital I/O through iDoor module, support to expand bus protocol through iDoor module, support to expand 3G/GPS/GPRS/Wi-Fi communication through iDoor module, support more than 30 kinds of iDoor modules, can