An information handling system couples a solid state drive assembly having plural solid state drives to a motherboard with a single M.2 connector coupled to the motherboard by interfacing the plural solid state drives with an adapter circuit board having an M.2 interface defined at one end to insert into the motherboard connector and having plural M.2 connectors to interface with the plural solid state drives in a desired configuration, such as a stacked vertical configuration that more efficiently uses motherboard footprint to include persistent memory.