RAM: 2*so-dimm DDR4 slot,max support 32GB. SSD:1 x msata high speed SSD. HDD: Support 1 x 2.5 inch sata 3.0 SSD/HDD(not include) WIFI: support 802.11A/B/G AC, Bluetooth5.2(Intel AX200) RJ45 LAN: 2 x LAN interfaces(Intel 225). Both LAN interfaces support Wake ON LAN (WOL) feature. Interfaces: 4 x USB 3.0, 4 x USB 2.0, 1 x 3.5mm jack, 1 x SPK/MIC, 1 x HDMI2.0 Max support 4096*2160/60Hz, 1 x VGA Max support 1920*1080/60Hz, 2 x RJ45 LAN, 6 x COM(RS232), Mini Pcie: Support 4G module.