A heat dissipating fan assembly includes a fan housing, a fan unit, a converter, and a connecting unit. The fan unit includes a DC motor mounted within the fan housing, and a plurality of blades extending outwardly from and driven by the motor. The converter includes a casing mounted on the fan housing, an AC-to-DC converter circuit unit provided within the casing, and an AC input and a DC output connected to the circuit unit. The connecting unit has a first connector coupled to the DC motor, and a second connector coupled to the DC output and matable with the first connector.