Support two storage: 1xmSATA SSD+1x 2.5 ''SATA SSD/HDD. 1xSIM slot (optional), 1xMini-PCIE wireless slot, support WiFi/3G/4G (3 choose 1) connection. Support Wide voltage input 12-19V. Support 1xHD-MI+1xDP dual display output synchronously and asynchronously. 1xDDR4 Ram Slot Support Maximum 16GB DDR4 2400MHz(suggest to choose brand like samsung, kingston, Hynix etc. to avoid compatiable issue) 1xSIM slot (optional), 1xMini-PCIE wireless slot, support WiFi/3G/4G (3 choose 1) connection. Support Wide voltage input 12-19V. Support AES-NI, ESXI, Watchdog, Auto power on, PXE( if your bios version not support the function, please ask for us the bios file to update it) Full Aluminum Alloy color shell for heat dissipation, Exquisite production craft on outside design. Fanless system without cooling fan, fit for industrial grade field, work as long as 24 hours. Low consumption TDP only 10W and can be mounted back of monitor by VESA bracket (optional).