Would this work?
Use the lg monitor with usb-c to usb hub, and connect sdcard reader and logitech mouse dongle to it
But if so, I wouldn't mind this setup, it means i have 3 usb-c ports left on the macbook pro, and the imac i still have can also use the libraries, network shares, etc.
My pluggin in-out of the lacie rugged hard drive over usb would not wear/tear my macbookpro, because ill hang it on the lg monitor, and that way if i connect the imac, it mounts on the imac as well.
The monitor powers the laptop, and the imac is in the wall socket of course. But that means i just have to use 1 port on the mbp.
Can the imac use the lg as a second monitor? it's a early 2009 imac, 24", .. it has an old DP port, i understand this might limit the resolution, but would it work as a second monitor on that imac? anybody know?
Would the mouse work like that? via the monitor, via the usb-c to usb hub? Or would that be too confusing for macOS to deal with?
Otherwise i simply have to use the usb-c to usb hub on the macbook pro on a second port, i guess. solve that problem - id still have 2 ports left.
Things like a printer, NAS storage for all the time machines and media shares, .. can all be on ethernet ports and usb ports of the router and limited to lan.