Maybe not all lines are connected to the VGA connector (which is used for monitor ID, among other things). These additional connections are not required in 99% of cases. It works with computer video outputs and I do it with multiple machines. For the money this is a bargain. Metal body, beautiful positive switches and pure iron. I don't see any of the resolution issues that are common with software and/or more complex switches. I have several different switches and if you just want to switch monitors this couldn't be better.
NEWCARE HDMI KVM Switch: 4K@60Hz, 2x1 HDMI2.0 Ports + 3X USB KVM Ports - Share 2 Computers on UHD Monitor, with Wireless Keyboard and Mouse Support - USB Disk, Printer, USB Camera Compatible
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π TRENDnet TK-803R: 8-Port Rack Mount KVM Switch with VGA & USB Connection, USB/PS2 Support, Device Monitoring, Auto Scan - Control 8 Computers/Servers
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Enhance Productivity with CKL HDMI KVM 2 Port 4K 30Hz Dual Monitor Extended Display (CKL-922HUA)
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CKL 4 Port KVM Switch Dual Monitor DisplayPort 4K 60Hz: Unprecedented Multi-Computer Control with Audio, USB 2.0 HUBS, and DP 1.2
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