Heat dissipation system and electronic device using the system

摘要

An electronic device includes a server, a plurality of fans, a fan holder attached to one outer side of the server and a plurality of fan ducts received in the fan holder. The server defines an inner cavity therein. Each fan is centrifugal fan and has a fan intake and a fan outlet perpendicular to the fan intake. The fan holder accommodates the fans therein. Each fan duct has an inlet communicating with the fan outlet and an outlet communicating with the inner cavity of the server through the fan holder to allow airflow from the fans into the server.