I have a brand new Dell OptiPlex 9020 mini-tower that I am building for my church for video presentation that I am putting an EVGA GeForce GTX 960 video card and an EVGA SuperNova NEX650G1 power supply in. My concern is connecting the new power supply to the motherboard. The Dell 9020 motherboard only has two connections from its current Dell OEM power supply, a 12V four pin connector (labeled: CPU power) and an eight pin connector (labeled: power); the Dell OEM motherboard does not have a 24 pin ATX connection. I am not sure how to connect my new EVGA power supply to the Dell motherboard especially since the EVGA power supply is 100% modular. Can any please help me with a solution to this issue? The EVGA support team suggested that there may be adapters available or that could be constructed to work with the Dell proprietary connections on the motherboard. I need the power supply to power the video card that I am installing as the Dell power supply does not supply the required power nor does it have additional connections to power the video card. Thanks in advance for any help that can be offered!

Here are the pictures as requested. One is the System Board Components chart from the manual, the other is an actual picture of the system board connections. (Note: I took the picture with the same orientation as the chart in the manual so that it might be easier to locate and identify the connections.)
Thanks in advance for the help!

hi dlleaders...I stumbled onto this post where you were trying to install the GeForce GTX 960 2GB card into your Optiplex 9020 mini tower with the upgraded PSU.  I am dealing with the exact same issue and equipment so am hoping you could tell me how your situation was resolved...successfully I hope!
 
thanks in advance!