Cisco Technology, Inc.

Robert Vincent Grimes

Phong Hoang Ho

Niels-Peder Mosegard Jensen

Eric Heidepriem

According to one aspect, a method includes obtaining a first signal from a host at an air mover system, the air mover system including an air mover and a tachometer, the tachometer having an associated tachometer signal. The method also includes determining whether the first signal is a request for information associated with the air mover, and providing the information from the air mover system to the host on the associated tachometer signal when it is determined that the first signal is the request for information associated with the air mover.

Method and apparatus for exchanging information through a tachometer signal

To reduce the impedance of the ground path from a heat sink to a ground pad on a printed circuit board, and thus reduce electromagnetic interference, an electrically conductive collar is arranged around an opening in the heat sink. The electrically conductive collar may include an internal extension, such that the internal extension abuts the conducting member passed through the electrically conductive collar and the opening in the heat sink to electrically ground the heat sink to the ground pad on the printed circuit board.

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Apex, NC, United States of America

Robert Vincent Grimes