I posted about using an HDMI connection to connect a Samsung computer screen to my iMac. I was going to buy a hub of some sort, but that turned out to be expensive. And I believe I would still not gain an open Thunderbolt port. But the Samsung screen has been acting up the last few days, flickering and going black. I'm considering buying a new screen, currently considering Dell P2419HC - LED Monitor - Full HD (1080P) - 24".
My questions is I really would like to free up the second Thunderbolt port on the iMac so I can use it for other devices. My audio interface is in the first port. I realize using another port could make the connection slower. And, I was told I could not use anything other than the Thunderbolt port to connect another computer screen. Is this correct? Do I have any other options? Thanks.