Cable (from radio to capture card INPUT)
https://amzn.to/45sg4Tl

USB Dongle (plugs into computer USB plug)
https://amzn.to/3HAcr4A

Buy the capture card below if you also want to show the rig screen on a monitor.

USB Capture Card (pass through)
https://amzn.to/4fLsvx1

Once you have the above connected, open the SCREEN tab in SM Pro, right click over the main area and use the menu to select your capture card which will be listed in a list with any webcams you have. Try them all until you see your rig screen.

Some radios such as the Yaesu require your to enable Video Out in the menu system.