I recently purchased a gtx 960 to upgrade from a 750ti. But when I installed the card, I got a prompt on my monitor saying that I needed to connect a cable for this certain card. I looked at the new gpu and saw a six pin port that I needed to connect to. However, I looked at my current wiring and didn't have one. Is there anyone who can tell me what kind of wire I would need? This is my power supply https://www.amazon.com/Seasonic-M12II-620-BRONZE-SS-620GM2/dp/B003HE260I?ie=UTF8&tag=pcpapi-20
And this is my graphics card: https://www.amazon.com/gp/product/B013LDXPFO/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
And this is my graphics card: https://www.amazon.com/gp/product/B013LDXPFO/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1