Dehumidifying devices, and data storage devices having one or more dehumidifying devices

A data storage device comprising:

• a) a data storage device housing having one or more walls that define a housing interior and a housing exterior;
• b) a dehumidifying device mounted to a housing wall, wherein the dehumidifying device comprises:
• i) a dehumidifying device housing comprising a first major side and a second major side, wherein the first major side is opposite the second major side;
• and
• ii) a membrane electrode assembly disposed within the dehumidifying device housing, wherein the membrane electrode assembly comprises:
• A) an anode;
• B) a cathode;
• C) a hydrogen ion conductor disposed between the anode and the cathode;
• D) a first electrical terminal electrically coupled to the anode;
• and
• E) a second electrical terminal electrically coupled to the cathode,
• wherein the anode is exposed through an opening on the first major side and faces the housing interior of the data storage device housing, wherein the cathode is exposed through an opening on the second major side and faces the housing exterior, wherein the first electrical terminal is exposed through an opening on the second major side, and wherein the second electrical terminal is exposed through an opening on the second major side of the housing;
• and
• c) a printed circuit board assembly mounted to the data storage device, wherein the printed circuit board assembly comprises a first electrical contact and a second electrical contact, wherein the printed circuit board assembly is positioned so that the first electrical contact faces and is in electrical contact with the first electrical terminal and so that the second electrical contact faces and is in electrical contact with the second electrical terminal, wherein the printed circuit board assembly has an opening overlying the cathode so that when power is supplied to the dehumidifying device moisture can pass from the cathode through the opening in the printed circuit board assembly.