[NAME] you need to connect one monitor using the HDMI to HDMI cable (HDMI output on the PC to HDMI input on the monitor). For the other monitor, you need a DisplayPort to HDMI adapter. like this one: [URL] You should connect the DisplayPort output on the PC to the adapter, and then using the HDMI cable, connect the HDMI port of the adapter to the HDMI input on the monitor.
  I'm setting up my own very small business. I'm no very tech savvy so I am going to need help dumbed down for me. I'm trying to set up two monitors. I ordered Dell equipment that was recommended to me. I have an XPS 8940 desktop and (2) SE2422H monitors. The XPS 8940 desktop only has 1 DP port and 1 HDMI port. Both monitors only came with an HDMI cord and I ordered and received a VGA cord (thinking it would help.) I have the one monitor connected to the computer with the HDMI cord, and connected the two monitors with the VGA cord, however that is not working when I hook them up. What am I doing wrong?  Side note: I'd also like to order a webcam and speakers (didn't think about all this prior to purchasing) and I'm running our of USB ports and the monitors don't have any (which is very annoying.)
XPS 8940, connecting two SE2422H monitors