Patent ID: 7916472

Claim:
An apparatus, comprising: a plurality of line cards, each line card from the plurality of line cards defining an opening and having a surface; and a chassis to contain the plurality of line cards such that the opening of the each line card from the plurality of line cards collectively defines, at least in part, a first portion of an exhaust flow pathway and a second portion of the exhaust flow pathway, the chassis defining, at least in part, a portion of an intake flow pathway through which a gas can flow across the surface of the each line card from the plurality of line cards in a first direction, the chassis and the plurality of line cards collectively disposed such that a first portion of the gas can flow within the first portion of the exhaust flow pathway in a second direction substantially orthogonal to the first direction and a second portion of the gas can flow within the second portion of the exhaust flow pathway in a third direction, the third direction opposite the second direction.