HDMI Splitter Synchronizer, USB Keyboard Mouse Sync Controller, KVM Switch/Distributor, 4-in-1-out Synchronized Mouse Keyboard Monitor, 1080p/4K Screen Splitting DNF Converter(4 ports/4K)

Split-screen and synchronization combo: One mouse and keyboard can control 4 computers simultaneously; it's a synchronizer, a KVM switch, and a multi-functional all-in-one device.
Independent Control: The KVM switch features a gold-plated alloy housing. It features a matte metal casing and a thick gold-plated interface. Compatible with various HD input versions, it ensures transmission performance and improves transmission speed.
Product Features: USB split-screen synchronizer with ultra-high-definition 4K@30Hz, seamless switching, stable and flicker-free operation, supports multiple instances, plug and play, no driver required.
Wide Application: The DNF Sync Controller is compatible with Windows 7/8/10, Mac OS, Linux, Vista, and other systems. It's also suitable for game studios, security/stock market monitoring, offices, and other scenarios.
Ultra HD 4K: 4K 30Hz Ultra HD picture quality can split the monitor screen into four 1080P resolution images.