4 Port – Share 4 USB or HDMI-compatible peripheral devices such as scanner, USB hard drive, or other USB devices without constantly changing cables. Use one keyboard, mouse, and monitor to control 4 PCs. Mouse and Keyboard Sharing – Control multiple hosts or laptops using a single set of keyboard, mouse, and monitor. Material – Aluminum alloy shell provides anti-oxidation and heat resistance, extending the lifespan of the USB switch. Easy to Operate – Plug-and-play design requires no software or drivers. Compact Design – Saves space and reduces clutter in office environments. Four hosts can share one display, keyboard, and mouse setup to improve work efficiency. Supports 4K@60Hz video resolution with clear, detailed image quality. Compatible with 4Kx2K high-definition output. Simple switching operation for a neat desktop setup. High-speed transmission ensures no lag, no loss of audio or video quality. USB data transmission technology ensures responsive mouse and keyboard performance without delay. Metal housing offers durability, wear resistance, high temperature tolerance, and efficient heat dissipation. Material: Metal Color: Black Package Contents: 1 x HDMI KVM Switch 1 x Desktop Controller 4 x USB Cable 1 x Instruction Manual (English and Chinese) Note: The package includes only the items listed above. Other accessories or products are not included. Note: Lighting effects and differences in display screens may cause slight variations in the color shown in images. Measurement may vary by +/- 1-3 cm.