Insertion and removal of computing cards in server I/O slots

Details Insertion and removal of computing cards in server I/O slots Insertion and removal of computing cards in server I/O slots

2011-08-16

2011-08-16

Phan, Raymond N (Department: 2111)

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus expansion or extension

Reexamination Certificate

active

08001313

ABSTRACT:
A switch is provided that detects when a computer expansion card has been added, removed or changed. During operation, the switch is held in a depressed position by contact with a card. If the card is removed, the switch is raised and, when a second card is installed in the same slot, the switch is again depressed. The depression of the switch triggers a change signal that initiates the introduction of power to the slot for a period of time long enough for the hypervisor to detect the new device. A delay between a release and subsequent depression of the switch is measured such that when the switch is released enough time is provided to firmly seat a different card in the planar device. Following the delay, power is supplied to the slot so that the hypervisor detects the card and updates the current configuration parameters.

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