A removable assembly for quickly inserting and removing a mass storage device from a compartment situated on the case of a portable computing device is described. The removable assembly is made of a mass storage device, a bracket which serves as a carrier for the mass storage device, and a metal plate. In some embodiments, the mass storage device is a solid state drive (SSD) card. The bracket is a single-piece plastic structure that is deflected for snap insertion into the compartment and snap removal from the compartment. The metal plate conducts heat from the solid state drive (SSD) card to prevent the SSD from overheating.