Since the Mac Mini does not need power from the monitor, why don't you try this: - Connect the Mac Mini to the monitor using an HDMI cable - Connect the Mac Mini to the monitor using the USB-A (mac) to USB-C upstream (monitor) that came with your monitor - Keep the macbook pro with usb-c to usb-c (#5 above) That should allow you to KVM switch between both, please take a look at the manual for more details
I wish to connect two Mac machines to my UltraSharp U2723QE using USB. So far, I have connected both the machines to my monitor using USB-C = 1. Mac Mini through the USB-C port at the center 2. MacBook Pro through the USB-C port on the left side I would like to- 1. Easily switch between the two machines using a shortcut key. 2. If possible, use my keyboard and mouse connected to Mac Mini to control both the machines.  Is this possible? Please let me know how.
U2723QE, Mac Mini + MacBook Pro connection