Easily share a screen between 2 Macs with this clever KVM switch [Review] | Cult of Mac
Amazon.com: KVM Switch with Serial Port Control, 4K@60Hz 4 in 1 Out HDMI KVM Switcher Box for Share Mouse Keyboard and Monitor, Can Work with Pi-kvm, Compatible with Windows/Linux/Mac System : Electronics
IOGear 2-port 4K KVM: Simple, cost-effective multi-Mac control | AppleInsider
macOS Catalina now runs on macOS-Simple-KVM! : r/hackintosh
The Best KVM Switches for 2023 | PCMag
(Lot of 3) TRENDnet TK-407 4-Port USB KVM Switches for Windows/Linux/Mac