... wide area network) 3. Feature: Stability* Support server operating system Windows any versions, LINUX: Debian, Redhat, Suse, Ubuntu, Fedora, ... card. 4. Functions:* Screen can be split up to 8 windows for displaying video, photo, , logo, date, weather, roll- ... And keep broadcasting when downloading.* Support terminal set password, for protect viciously control from outside.* Support modify terminal IP ...