A pluggable module includes a pluggable body extending between a mating end and a cable end. The pluggable body has a first end and an opposite second end with sides extending therebetween along a length of the pluggable body. The first end, second end and sides define a cavity. An internal circuit board is held in the cavity. The internal circuit board is provided at an end of a cable communicatively coupled to the internal circuit hoard. The pluggable body is configured to be plugged into a receptacle assembly such that the internal circuit board is communicatively coupled to a communication connector of the receptacle assembly. The pluggable body includes a plurality of fins extending outward from at least one of the first end, the second end and the sides. The fins are provided proximate to the cable end of the pluggable body.