Amazon.com: ATEN 2-Port USB 4K HDMI Cable KVM Switch with Remote Port Selector CS22H (up to 4096 x 2160 @ 60Hz, HDCP 2.2) for Windows, Mac, Linux - One KVM Console Controls
ATEN CE820 USB HDMI HDBaseT 2.0 KVM Extender (4K@100 m) - Newegg.com
Aten CE820R HDBaseT 2.0 HDMI USB KVM Extender - Avacab