I am a bit lost on what adapters and cables I need for connecting a second external monitor to my laptops.
I already have an external HDMI monitor. All my three laptops have HDMI ports with which I am able to use this external monitor (using HDMI male-to-male cable). I want to connect one more HDMI monitor now as a second external display (ideally to any of my three laptops). All three laptops run Windows 10.
All three laptops have multiple USB 3.0 (SS) ports. They all have mini display ports (I believe I am using the correct term) as well, but one of them seems to have a different kind. Please see images below.
I am not sure if the left most port in this image is the same as the left most ports in above two. It doesn't have the two + symbols like the ones above have. Is it the same as the ports in the first two laptops?
Not realizing that I have these mini display ports, I purchased "Plugable USB 3.0 to DisplayPort 4K UHD" from Amazon (for $60), which has a male USB 3.0 and a female full-sized Display port. I believe that I now need a display port to HDMI adapter to connect to the external monitor. Would it be better to return this adapter and purchase a different one?
UPDATE: I don't really need HDMI for my second external monitor, since it also has a VGA port. I ended up purchasing a USB 3.0 to VGA adapter, which costs only $16. All my laptops have at least one spare SS port, so I am good now.