A heat dissipating assembly capable of being placed between a circuit board and a casing of an electronic device includes a fan assembly and a bracket. The fan assembly is mounted on the circuit board. The fan assembly includes an enclosure defining a chamber and an opening at a side wall thereof, along with a blower received in the chamber. The bracket is located between the fan assembly and the casing of the electronic device. The bracket has a side wall thereof defining a cutout connected with the chamber. The cutout and the opening of the enclosure are defined at two different sides of the heat dissipating assembly.