Hewlett-packard Development Company, L.P.

Walter William Alexander, Iii

Robert Campbell

Wesley H Stelter

Richard Ortiz

Roy Tsuchida

Jerry Huang

Embodiments of the present invention include a method for providing protected swapping of a peripheral component in a computer system. The method comprises determining a position of a first mechanical retention latch wherein the first mechanical retention latch has an open position and a closed position and is configured to communicatively couple to a computer expansion card slot. Provided the first mechanical retention latch is in the open position, the method further includes filtering power management events and preventing the computer system from powering up. Provided the first mechanical retention latch is in the closed position, allowing the computer system to accept power management events.

System and method for preventing wake on LAN to protect expansion cards

The present invention includes an integrated circuit that is operable to connect a redundant array of inexpensive disks (RAID) or other peripheral device to a disk controller, such as a small computer system interface (SCSI) controller in a host device. The integrated circuit provides the peripheral device with sole access to the disk controller when operating in a straight mode. In straight mode, the peripheral device may communicate with the disk controller through a PCI bus to perform operations, such as retrieving or writing data to the peripheral device. Also, when in straight mode, other controllers, including the host's CPU, may be prevented from using the disk controller to avoid data collisions, data loss and possible system failure. The integrated circuit may also function in standard mode, such that other controllers connected to the host may access the disk controller.

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Auburn, CA, United States of America

Walter William Alexander, Iii