New Asus CPU Cooling Fan DC 5V 0.5A 4-wire 4-pin Black connector Part nr: DFS2004057S0T FHM7, 13NB0B10T01111, 163Q-04JN NSB85B01-17F11 For use: VivoBook X540 X540LJ X540LA X540SA X540LJ X540YA VM520U ASUS VivoBook X540SA X540L X540S X540SC Asus A540 Series Asus F540 Series Asus R540 Series Asus FL5700 FL5700U