Need help plugging in 760

Solution
You need 2 plugs. The one plug you have pictured is a 6+2, so you can use it in the 8 pin slot or the 6 pin slot. You will however need another cable with another plug to fill the other slot.
You need 2 plugs. The one plug you have pictured is a 6+2, so you can use it in the 8 pin slot or the 6 pin slot. You will however need another cable with another plug to fill the other slot.
 
Solution