KVM Switch: One Set to Control Your Two Systems

Does Hotkey Puck G2 support on only devices which they come with in the box ? I am using PD2506Q but there were no hotkey puck ? Can I buy it seperately ?

Where can I buy HotKeyPuck?

Woukd this work with PC desktop and Max Mini setup?

KVM in 5:9 mode ?

I have the KVM working fine with the normal mode, but if I do PBP 5:9, I cannot use the KVM. I am not sure if the KVM function is designed to work in the 5:9 mode. If I try to switch KVM, it tries to swap the 5:9, if there was some way to disable the video swap it will work just fine,
Any way to sort this out ?

Does this work if you have a dual monitor system?

The voiceover guy here is a champ for getting through this half-assedly edited Engrish script.

I have the BenQ PD3420Q DesignVue Designer 34" 21:9 HDR IPS Monitor, and I tried to connect two desktops to use the KVM switch. It did not work. I used one USB cable and HDMI cable and was able to use one PC with the keyboard and mouse, but I could not use it on the second desktop using a USB-C cable and display port cable. What am I doing wrong?