Amazon.com: KVM Switch HDMI 2 Port Box, KCEVE USB KVM Switches for 2 Computers Share Keyboard Mouse and one HD Monitor, Support Hotkey Switching, UHD 4K(3840x2160) : Electronics
Amazon.com: KVM Switch Selector, 4 Computer Sharing 4 USB Devices USB 3.0 Switches Box for Mouse Keyboard Scanner Printer with Individual Switch Button : Electronics