An interface adapter may include a printed circuit board that includes an edge connector dimensioned to be inserted into an expansion socket of a computing device. The interface adapter may also include a plurality of modular computing components removably mounted to a top surface of the printed circuit board, where each modular computing component includes a connector dimensioned to be inserted into a socket of the printed circuit board and the connector of each modular computing component includes a pinout that is more compact than a pinout of the edge connector of the printed circuit board. In addition, the interface adapter may include one or more modular heatsinks coupled to a top surface of each modular computing component to facilitate heat dissipation from the top surface of the modular computing component. Various other apparatuses, systems, and methods are also disclosed.