Hi, wondering if anyone can help us out. I work in a graphic design studio and we all use Mac Pros with a single screen at the moment but have acquired some extra HP monitors that we would like to connect so we can use two screens at once. However we are struggle to find a way to connect the new screens as they do not have HDMI ports (which was my initial response). The new monitors have a single port for the blue ended cable (the one with the two screws, not sure what they're called!) and our Mac Pros have a single HDMI port which currently has an adapter for the screens we are currently using. Any advice would be greatly appreciated!