Sun Microsystems, Inc.

John A Harada

William L Grouell

William Leslie Dailey

Anthony N Eberhardt

Glenn Patrick Charest

An alignment device includes a crossbar and two brackets. Each one of the two brackets includes at least one guide hole, with each guide hole having a front opening. The crossbar couples the two brackets and defines a connector opening. The alignment device also includes two connector alignment posts. Each one of the two connector alignment posts has a first end coupled to the crossbar and an opposing end protruding into the connector opening. A method of connecting a circuit card to a mid plane and a computer including the alignment device also are described.

Alignment device and method of connecting a circuit card to a mid plane

An electrical assembly that allows a plurality of electronic assemblies to be cooled by a number of fans. The assembly includes a housing which has a plenum chamber that is located between a rack chamber and a fan chamber. The rack chamber is separated from the plenum chamber by a backbone wall. The fan chamber is separated from the plenum chamber by a fan wall that is perpendicular to the backbone wall. The rack chamber contains a plurality of electronic assemblies such as hard disk drives. The fan chamber contains a plurality of individual fans. The fans induce an air flow from the rack chamber to the fan chamber through the plenum chamber. The plenum chamber provides a uniform pressure that induces an equal flow rate across each disk drive in the rack chamber. The fans are controlled by a control circuit which can detect the failure of one fan and increase the speed of the remaining fans to maintain the plenum chamber pressure. The constant plenum chamber pressure insures an equal flowrate across each disk drive even when one of the fans fails.

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San Francisco, CA, United States of America

John A Harada