A few notes on the KVM setup.
I have a Mac Mini at home and a Dell work laptop. The laptop is connected via USB-C with a DisplayPort icon (Upstream 1), and the Mac is connected via HDMI and a second USB-C cable (Upstream 2).
In the KVM settings:
• Upstream 1: Auto
• Upstream 2: HDMI
Switching takes 6–7 seconds, about the same time as waking up. This is slower compared to Dell monitors, where it takes only a second or two.
There’s also another unpleasant issue. After a while, when the screen timeout triggers on the computer that is not currently connected, the Asus KVM doesn’t recognize this and assumes that there’s no device on the other end. As a result, it won’t allow input switching. I have to press something on the second computer to wake it up again so that the KVM detects it. On the laptop, I can open and close the lid; on the Mac Mini, I have to press the button on the device (let’s all smile and wave at the Mac Mini M4 owners!

). It’s clear that in this situation, the keyboard and mouse connected to the monitor are useless.
Fortunately, my keyboard supports Bluetooth and multiple connections, so I just switch it to the second computer, press any key, and it wakes up. Then I can use the KVM to switch the input, and I can either switch the keyboard back to the USB port with a shortcut or leave it on Bluetooth.
On the Dell KVM, this worked differently. It switched inputs in any case, and pressing a key on the keyboard would wake up the screen, just like on a regular computer with a screensaver.