Securely Control Up To Four Displayport Desktops Or Servers From One Mouse / Keyboard And Two 4K 30Hz Monitors Status Leds For User Console Ports / Port Selection Niap 4.0 Certified Prevents Data Leaks / Isolates Systems / Has No Internal Memory Or Storage Metal Housing For Enterprise-Grade Durability And Reliability Anti-Tamper Switches Detect Physical Intrusion Attempts Which Disable All Functionality And Trigger Visual And Audible Alerts Built In The Usa