With such a wide variety of new and vintage display adapters around, it's likely you can convert from your old Mac to a modern display. For an interesting note on some older Mac display conversions, ...

HDMI is a popular way to stream video and audio via cable, but it's not universal. That's when these adapters come useful.

There is a possibility that an outdated and corrupted display adapter driver is causing the problem. You can download the display adapter driver from its manufacturer ...

HDMI splitter for multiple displaysAn HDMI splitter allows one HDMI source to display the same content across several screens simultaneously. This device is commonly used in restaurants, electronic ...