Mini-DP is still used for a lot of professional graphic cards that have a lot of outputs, because you can’t fit 4 or 8 regular sized DPs on a normal PCIe card b

Mini-DP is still used for a lot of professional graphic cards that have a lot of outputs, because you can’t fit 4 or 8 regular sized DPs on a normal PCIe card bezel, especially if it is just half size. (https://www.techpowerup.com/review/nvidia-rtx-a2000/2.html https://www.techpowerup.com/review/nvidia-rtx-a2000/2.html) My older Dell monitors have both (mini and regular DP) and ship with a mini to regular cable. So you can use it in both directions and they don’t have to ship two cables.