4ports All-in-one Computer Screen Splitter and SynchronizerHDMI Multi-Screen Splitter, 4 Inputs and 1 Output

Split-screen and synchronization combo: One mouse and keyboard can control four 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.
Plug & Play: USB keyboard and mouse synchronization controller.
Built-in imported high-performance chip for better computer control. Plug and play. Good compatibility, 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.