StarTech.com 4 Port HDMI KVM Switch 4K 30Hz Dual Display This 4K HDMI KVM with dual monitor support lets you control four HDMI computers with a single mouse keyboard and dual monitors
StarTech.com 4 Port USB HDMI KVM Switch with Audio - 4K 30Hz Dual Monitor - SV431DHD4KU - -
Tripp Lite HDMI KVM Switch 4-Port Dual-Switch Desktop 4K60Hz USB 3.2 Gen 1 - B006-HD2UA4 - -
CKL HDMI KVM Switch 4 Port Dual Monitor 4K 60Hz, 4x2 PC Monitor Keyboard Mouse Selector with Audio and 2 USB 2.0 HUB (CKL-942HUA-2) : Everything Else
4 Ports 4K Dual Monitor HDMI KVM Switch with Audio and USB 3.2 Gen 1 - MKAG-E3124