 
  
  For CPU and case fans, this adapter converts a 3-pin fan connector to a standard 4-pin power connector with power pass-through.
Connector 1: One 3-pin Male
Connector 2: One 4-pin Male and One 4-pin Female
                
                  
                  
                  
                Connector 1: One 3-pin Male
Connector 2: One 4-pin Male and One 4-pin Female
