The High Sec Labs Secure 8-Port Single-Head KVM Switch is a hardware device that enables sharing of keyboard, video, mouse, audio, and USB peripherals across up to eight computers from a single workstation setup. The switch is designed for environments where computers operate at different security classification levels, enforcing data separation between connected systems. It supports 4K video via DisplayPort and HDMI interfaces (model SK81PH-4). Key security mechanisms include: - Multilayered security to block peripheral exploits, information leaks, eavesdropping, signal transmission, malware propagation, and hardware/firmware tampering - USB peripheral filtering via VID/PID-based whitelisting and blacklisting to block unauthorized devices - Secure switching of smart card and biometric authentication devices between connected computers The SK81PH-4 model is compliant with NIAP Common Criteria Protection Profile 4.0 (PP4.0) for Peripheral Sharing Devices (PSD). The product is also BAA (Buy American Act) and TAA (Trade Agreements Act) compliant, making it suitable for U.S. federal government deployments. The switch is available in multiple models, including the SK81PH-4 (DP/HDMI to DP/HDMI, 4K, PP4.0 certified) and the SK81HU-M (M-Line variant).