Need help: Recognizing different DisplayPorts 1.2+

[Zethio]

So I need a DisplayPort 1.2 or higher, but whenever I'm looking at them, I am not sure if it is display 1, 1.2, 1.2a, etc. Can anybody help me recognize the different ones?

In advance, thank you.

 

[iceblitzed]

what device or devices is in question