Hi! What do you mean by 4 port? 4 PC inputs? Here at Level1 we only have a 2 PC input EDID KVM.
I will at least link it so you can see:
This is our EDID made specifically for EDID emulation. You can find more info here:
All of our KVMs have 2 USB 3.0 & 4 USB-HID ports. However, you will definitely need an external splitter & we only offer up to 2 PC for the EDID models.