1. A semiconductor memory device, comprising:
a substrate having a conductive region on a surface thereof;
a semiconductor memory unit;
a memory controller, at least one of the semiconductor memory unit and the memory controller being disposed on the substrate;
a housing enclosing the substrate; and
a heat conduction member in contact with and pressed between the conductive region and a portion of the housing, wherein the
heat conduction member is made of an electrically-insulating material.