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Patent

Electronics cooling assembly with multi-position, airflow-blocking mechanism

TLDR
In this paper, an air-cooled heat sink, an auxiliary air-moving device, and an airflow blocking mechanism are used to dissipate heat from the electronic component(s) to a cooling airflow passing across the heat sink.
Abstract
Electronics cooling assemblies are provided which include an air-cooled heat sink, an auxiliary air-moving device, and an airflow-blocking mechanism. The heat sink couples to one or more heat-generating electronic components, and dissipates heat from the electronic component(s) to a cooling airflow passing across the heat sink. The auxiliary air-moving device provides, when active, an increased flow rate of the cooling airflow across the heat sink. The airflow-blocking mechanism toggles between a passive airflow position and an active airflow position. In the passive airflow position, the airflow-blocking mechanism allows the cooling airflow to exhaust from the heat sink without passing through the air-moving device, and in the active airflow position, the airflow-blocking mechanism allows the cooling airflow to exhaust from the auxiliary air-moving device.

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Server system having a hot plug motherboard

TL;DR: In this article, a server system with a hot-plugged motherboard is described, which includes a motherboard module, at least one midplane board and a hard disk module, coupled by hot plugging to each of the motherboards.
References
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