Abstract: A cooling system for immersed computing devices, comprising a cooling bath tank that contains a cooling fluid that flows through the inside thereof from at least one outlet to an inlet, in which said cooling bath tank is designed and arranged to enable at least a first portion of at least one computing device to be cooled to be inserted therein, said computing device being at least partially immersed in the cooling fluid contained therein, and at least one cooling unit designed to collect and cool the cooling fluid flowing out of said at least one inlet and to return the cooling fluid, once cooled, through said at least one outlet into said cooling bath tank, characterized in that said at least one cooling unit is designed to be inserted into said cooling bath tank, being at least partially immersed in the cooling fluid contained therein, and to be removed therefrom.