4 Port USB HDMI KVM Switch for sharing peripherals across 4 computers using a single keyboard, mouse, and monitor. Connects USB and HDMI-compatible devices such as scanners, USB hard drives, and other USB peripherals without the need to frequently swap cables. Mouse and keyboard sharing functionality allows control of multiple hosts, including laptops, with one set of input devices. Constructed with an aluminum alloy shell for durability, heat resistance, and effective heat dissipation. Designed to extend the lifespan of the device with oxidation-resistant, wear-resistant metal housing. Plug-and-play operation requires no software or drivers for easy setup and use. Compact design saves space and reduces clutter, ideal for organized workspaces. Supports 4K@60Hz video resolution with clear, detailed display and high-definition 4Kx2K compatibility. Ensures high-speed data transmission with no lag, maintaining full picture and sound quality. USB technology enables smooth, responsive keyboard and mouse performance without delay. Package includes: 1 x HDMI KVM Switch, 1 x Desktop Controller, 4 x USB Cable, 1 x Instruction Manual (English and Chinese). Additional items not included. Note: Color may vary slightly due to lighting and screen settings. Measurement tolerance: +/- 1-3 cm.