Methods of protecting vent/drain features in electronic assemblies

A method of venting an electronic assembly, comprising:

• ingesting foreign material into a vent/drain cover, wherein the vent/drain cover defines an axis and a surface with a first wall protruding from the surface in a direction and a second wall protruding from the surface in the same direction but displaced radially from the first wall, the first wall having first wall segments and a first channel formed between two of the first wall segments, the second wall having second wall segments and a second channel formed between two of the second wall segments, and the first channel circumferentially offset from the second channel;
• and
• expelling the foreign material from the vent/drain cover using a vent flow traversing a labyrinthine path within the vent/drain cover, wherein the cover body has an inner wall protruding from the surface in the direction of the first wall, and wherein an interior of the inner wall is fluidly isolated from a labyrinthine path, wherein the labyrinthine path is at least partially defined by a portion of the inner wall, a portion of the first wall, a portion of the second wall, a portion of the at least one first channel, and a portion of the second channel.