I'm confused, why do you want hardware and what do you want the hardware to do? And, why not use a USB keyboard?
replyYou could use an rpi pico. It has a usb port and there is a software hack to bit bang a second usb port, iirc.
I am wondering if connecting over USB is an XY problem.
replyTo try and clarify a bit: I am essentially trying to have a KM (KVM without the V) over USB.
replyTo go one step higher, I am trying to control a mac mini from the keyboard of a macBook.
Why not use the macs’ built in “sharing” functionality?
replyIt usually runs a Debian based image. And you would probably just have to reboot the script, or write a wrapper around the keyboard functions.
replyBut yes, it's overkill for an overkill solution. Buying another keyboard may be easier.