Amazon.com: Cable Matters USB 3.0 KVM Switch DisplayPort 1.4 for 2 Computers with 8K@60Hz / 4K@120Hz / 4K@144Hz Display Port Video & 3x 5Gbps USB Ports, FreeSync, G-SYNC and HDR Support -
4 Port HDMI KVM Switch Support Max 4K@30Hz Input Using one Set of HDMI Monitor | LINOVISION US Store
Amazon.com: 4K HDMI KVM Switch, 4 Port HDMI USB Switch for 4 Computer Share a 4K@30Hz Monitor and 3 USB Device Keyboard Mouse Printer, Including 4 KVM Cables : Electronics