Barebone 4 Lan Micro Industrial Computer Qotom-310G4 Celeron Processor 3215U 2M Cache, 1.70 GHz, Broadwell Fanless Windows Linux Pfsense Intel Celeron Processor 3215U (2M Cache, 1.70 GHz, Broadwell),Dual-Core,Fanless, Low power,Aluminum alloy Shell Barebone :NO RAM NO SSD NO WIFI (NO OS) 1*HD Display, 4*Intel RJ-45 Ports , 2*USB2.0, 2*USB3.0, 1*COM Ports It supports Windows, Linux, pfSense, CentOS, Sophos, OPNsense, VyOS, Linux iptables, Untangle, ect. But it will come with the latest pfSense (Username: admin; Password: pfsense) by default. If you prefer to other OS, please leave a message. You also can install OS by yourself. F11 key boot from USB Drive. Delete key enter BIOS. This pfSense appliance can be configured as a firewall, LAN or WAN router, VPN appliance, DHCP Server, DNS Server, and IDS/IPS with optional packages to deliver a high performance, high throughput front-line security architecture at a excellent price per gigabit.