@LovesTha Well, it means if you don't need PD (which I don't), you don't have to also plug in a wall wart just to use it, which is a key preference for me.

"PC1" would be a desktop and hence doesn't need PD, and "PC2" will be one of two different laptops, one of which would benefit from the DP Alt Mode output, and one that wouldn't. But neither would use PD since I prefer to handle power independently from peripherals.

@LovesTha Hmm? Like, on the device itself?

The ports labelled "PD100W" are the PD inputs - you plug your PD wall adaptor(s) in to each of those as needed.

They are permanently connected somehow through to the respective PC1/PC2 ports, which are the links to the actual computers, since it supports changing both PC1 and PC2 simultaneously from their respective PD ports.

I assume each PC/PD port pair is connected to its own individual USB hub or similar, and when the KVM switch cuts between PC1 and PC2, it basically disconnects the USB2.0 ports and DP/HDMI outputs from one hub and connects them to the other.