I just received my Sapphire Vapor-X R9-280X Card. I am going to use one molex power adapter as an 8-Pin PCIE Connector. However, on inspection of the adapter, the each molex only has 3 Pins, while the connector on my power supply has 4 Pin Slots. I went onto Newegg for a picture and in the picture, there are only 3 pins. Is this supposed to be like that? Do I just plug it in and leave a Pin Open? Do I need a new PSU/Card/Adapter?
Newegg Page:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814202045
Newegg Page:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814202045