When the workstation must stay isolated, the KVM has to do more than switch video. The Secure 4 Port KVM Switch is designed for environments where data separation, controlled access, and physical integrity matter. It lets one user operate four DisplayPort systems from a single keyboard, mouse, and 4K 30 Hz monitor while maintaining the kind of isolation expected in security-focused deployments. NIAP 4.0 certification makes this model a strong fit for teams that need a KVM built around trust boundaries rather than convenience alone. With no internal memory or storage, it reduces the risk of data leakage through the switch itself. Status LEDs simplify port awareness, while anti-tamper switches detect intrusion attempts and disable functionality with visual and audible alerts. The metal housing adds the durability expected in enterprise environments, and the Made in the USA construction supports procurement requirements where origin matters. For secure operations centers, regulated environments, and high-assurance desktop control, this switch delivers the discipline that lower-cost KVMs often lack.