XPS 8700, 6 pin vs. 8 pin PCIe cable for graphics card

Sorry for the rotated photos.  My first post, and I couldn't see how to rotate photos.

There is a lot of great info on this topic in this thread

I am in the process of upgrading my graphics card.  I bought a Gigabyte GTX 1060, 6 Gb, Rev 2.

The graphics card has an 8 pin female connection.  My power supply only has a 6 pin connector.  It does not have a 6+2 connector.

In this photo, you can see the extra set of unoccupied pins on the 1060.

 

 

 

 

 

 

 

From the above link & thread, it appears this 1060 card needs more wattage than my power supply gives.

The computer is not recognizing the card

 

 

 

 

 

 

 

 

I have verified 12V from the power supply

 

 

 

 

 

 

 

Here are my power supply specs, Model D460AM-02

 

 

 

 

 

 

 

I have spent an hour or two shopping for a power supply, but I read some horror stories about the wiring and the pins not being identical to the stock configuration.  This led to fried motherboards, or no boot up.

 

Can someone reply with the stock Dell part number of the Dell power supply that will work for me?

 

Thanks,

Brian