Version numbers explain more than connector size

Standard DisplayPort and Mini DisplayPort describe connector formats; they do not by themselves identify the supported protocol version. HP lists 4K at 60 Hz as an example for DisplayPort 1.2, while its DisplayPort 1.3 examples include 4K at 120 Hz and 8K at 30 Hz. Its discussion of DisplayPort 1.4 adds higher resolution and refresh-rate possibilities, including 8K at 60 Hz, and explains the role of Display Stream Compression. These examples should be read as capabilities to verify for a particular setup, rather than promises made by the shape of a socket.

Check compression and every device in the path

HP identifies Display Stream Compression, or DSC, as a way for DisplayPort 1.4 to handle demanding display modes. A useful compatibility check therefore includes the computer output, display input, cable, and any adapter between them. An adapter may lower the maximum resolution or refresh rate even when both end devices offer DisplayPort connections. Multiple-monitor configurations introduce another question: whether the equipment supports the required arrangement, such as daisy chaining. Start with the resolution, refresh rate, and number of monitors you actually need, then compare those requirements with the documented connection capabilities.