Hi njc2022, I think you have just the right amount of information provided, you just need the right help. The P2723DE is MST (Multi-Stream Transport) enabled and the C2723H is not. But no need to fear, according to Dell, MST will work on non-MST monitors as long as the non-MST monitor is at the end of the daisy chain. You will only need 1 DisplayPort on your computer to get this working, so no discrete or extra video card is needed. The XPS 8950 has a DisplayPort 1.4, so you already have everything you need to get this working. Since these are new, I will assume all of your cables and wires are good. First, please make sure you are using the DisplayPort cables that were included with the monitors (per Dell's recommendation) and make sure they are properly connected in a daisy chain. If you are sure you have already connected both correctly, move on to the Second step. 1. Connect a DisplayPort cable from the back of your PC's DisplayPort port into the "Input" DisplayPort port of the P2723DE monitor. 2. Connect a DisplayPort cable from the "Output" DisplayPort port of the P2723DE Monitor into the DisplayPort port of the C2723H monitor. Second, on both monitors, select DisplayPort as the input and configure it correctly. 1. On both monitors, press the input button to set it to DP or DisplayPort. You can do this in the Menu as well. 2. Click on the menu button of each monitors, navigate to Display Settings, go to DisplayPort 1.2 and select Enable. (it is set to Disabled by default.)  If you see an option to select a different version of DisplayPort such as 1.4 or 1.1 do not select those, be sure to select 1.2. I have seen this issue myself, and selecting 1.4 or 1.1 causes issues. Your monitors should now be working. You just need to change the settings of your monitors by right clicking on the desktop, and then clicking on Display Settings. You can find lots of video online on how to change the monitor settings. Hope that helped.
Hello everyone, Last week I bought XPS 8950 desktop. I bought two monitors with it: P2723DE and C2723H. I have been able to run C2723H via a display cable. But when connecting the second monitor (P2723DE) via display cable it keeps searching for the signal and eventually fails to detect the signal. The same port on the back of the desktop works well with other monitor. I have changed/swapped the cables. Today I called Dell Tech support. They mentioned that XPS Desktop will be able to send signals to one monitor only through a display cable. If I want to use a second monitor, I will have to use HDMI. It didn't make sense to me. I would like to have your opinion. Thanks.
XPS 8950, P2723DE, C2723H, setup