SpeaKa Professional 4 ports KVM changeover switch HDMI USB 1920 x 1080 Pixel, 3840 x 2160 Pixel | Conrad.com
4-Port True 4K HDMI Switch - VS481C, ATEN Video Switches | ATEN Belgium - English
Amazon.com: HDMI 4 Port Kvm Switch Box for 4 Computers Share 1 Monitor, 4K@60Hz 4X1 KVM Switch with 4 USB 2.0 Ports, HDCP 2.2, Plug and Play, Button Switch, with 1 HDMI and 4 USB Cables : Electronics