This 4-port HDMI KVM switch lets you control four HDMI computers with a single mouse, keyboard & monitor up to 4K 30 Hz. The KVM also features 3.5 mm audio & a built-in 2-port USB (Universal Serial Bus) 3.0 hub. 4K at 30 Hz UHD dual display With support for ultra-high-definition 4K 30 Hz resolutions, this 4-port KVM switch can drive dual HDMI displays with crystal clarity, making it ideal for graphical applications that require UHD capability. Convenient & cost-effective USB (Universal Serial Bus) 3.0 peripheral sharing This 4-port KVM switch offers two USB (Universal Serial Bus) 3.0 ports, as well as four HID keyboard & mouse ports, so you can share peripheral devices between each computer & avoid the cost of separate equipment. The USB (Universal Serial Bus) 3.0 hub automatically switches your connected devices to the selected computer, saving you the hassle of disconnecting and reconnecting peripherals. Complete multimedia capability Along with dual UHD video capability, this KVM switch features auxiliary 3.5 mm dual-channel bi-directional audio ports. This independent analog audio lets you share your analog audio devices such as speakers or a microphone between each of your connected computers, giving you complete multimedia control of your systems.