Well, I guess were both wrong in thinking he wanted to use the Toshiba for his 2017 MacBook Pro?
Looking closely at the picture he submitted of the Toshiba: There is a VGA input and L, R, audio inputs. So Bob would be correct except he forgot to mention about needing audio cables.
However, if he intends to use the Toshiba for his 2017 MacBook Pro, he'll need what I and Slydude recommended.