Keep four secure workstations under direct control without compromising separation. The StarTech CK4-P404C is a NIAP 4.0 certified desktop KVM built for environments where data isolation matters as much as operator efficiency. It supports four DisplayPort computers and four 4K 30 Hz monitors, giving operators clear visibility across multi-system workflows while maintaining strict boundary control. A dedicated and configurable Common Access Card port supports secure smart card login, making this model a strong fit for regulated or credentialed access environments. Anti-tamper switches detect physical intrusion attempts and respond by disabling functionality while triggering visual and audible alerts. With no internal memory or storage, the switch is designed to reduce attack surface and prevent data persistence. Metal housing adds physical durability for controlled rooms, labs, and secure deskside deployments. Status LEDs provide immediate port and console feedback, helping operators verify active connections at a glance. Built in the USA, this model is positioned for teams that need verified security controls, not just basic KVM convenience.