Brand: StarTech.com. MPN: CPUFANADAPT. The StarTech 6" 3-pin to Large Internal Power CPU Fan Adapter Cable allows a fan with a TX3 motherboard connector to draw power from a standard LP4 power supply connector.  Length: 6". Connector(s): 1 x 4 pin internal power, male. Connector(s) (Other Side): 1 x 4 pin internal power, female , 1 x 3 pin internal power, male.