MacBook Pro MacOS Mojave - Smart Board
I have a MacBook Pro running MacOS Mojave (10.14.6). I cannot update because I have 7TB of photos sorted and edited in Aperture legacy software. I need to be able to connect with Smart Boards in schools to show Keynote presentations. I tried to download the software but it requires 12.0.0. Is there software available for 10.14.6 that would allow me to connect with a Smart Board? Or do I need to buy a separate laptop for this? For my last presentation, I exported to PowerPoint and transferred to a Windows school computer, but it messes with the fonts and transitions.
MacBook Pro 15″, macOS 10.14