The High Sec Labs Secure 4 Port KVM Combiner Switch is a hardware device that combines the functionality of a KVM (Keyboard, Video, Mouse) switch, a multi-viewer, and a video scaler into a single unit. It allows a single user to connect and interact with up to four computers simultaneously through one or two displays. Key hardware specifications include: - 4 computer input ports supporting DisplayPort and HDMI connections - 2 HDMI console output ports - UHD 4K resolution support (up to 3840x2160) on both input and output - USB Type A/B for keyboard and mouse control - 3.5mm analog audio jacks on both computer and console sides - Optional filtered USB (fUSB) port on the SC42PHU-4 model Two models are available: - SC42PH-M: Standard secure KVM combiner - SC42PHU-4: NIAP Common Criteria PP4.0 PSD Protection Profile certified model, also BAA and TAA compliant The device supports custom view modes, allowing users to arrange and switch between display layouts. Keyboard and mouse control can be freely switched between all connected computers. Supported operating systems include Windows, Linux, and macOS. The product carries CE, RCM, FCC Class B, VCCI, TUV US, and TUV Canada certifications. It operates on 100–240V AC with a maximum power draw of 35W, and comes with a 2-year warranty and a 10-year product lifecycle.