- The HDMI-compatible 4X2 KVM matrix allows seamless switching between 4 input devices, distributing signals to 2 monitors that can display either the same or different content. Each output port supports independent audio output via Optical SPDIF or a 3.5mm audio jack. - To ensure smooth operation, set both PCs to extended mode before use. This 4-port KVM matrix effectively manages 4 computers with 2 sets of keyboards, mice, and monitors, supporting a variety of HDMI-compatible devices. - Note that only one picture can be displayed per monitor; simultaneous different signals cannot be shown on a single display. For dual images, connect two monitors. - The product includes 4 USB cables, eliminating the hassle of purchasing them separately. It supports three convenient switching modes: button, remote control, and keyboard switching. - Ideal for a range of applications including entertainment centers, retail displays, high-definition TV set-top boxes, projectors, data centers, meeting rooms, schools, and corporate training environments. - Please be aware that while the 4X2 KVM device does not natively support dual video extension, computers equipped with expansion cards can enable this feature. Ensure your computer has the necessary expansion capabilities for dual video output. - Remember to configure your two PCs to extended mode prior to use to avoid switching issues.