Abstract: A computer system with densely-mounted components and effective cooling is provided. A hard drive mounting structure for “hot swap” hard drives utilizes a hard drive assembly in which a hard drive is mounted between a pair of parallel rails connected by a retaining portion. The rails provide a precise mechanism for loading and unloading the “hot swap” drive, without increasing the overall height of each hard drive assembly. A handle with double-cam actuation is used during insertion and removal of the hard drive assembly. In accordance with the present invention, two half-height hard drives may be stacked in a server mountable in a 2U rack. A tool-less lock is provided for releasably securing expansion cards to the computer case without the use of screws.

Abstract: A low profile high density rack mountable enclosure with superior cooling and highly accessible re-configurable components is disclosed. One embodiment of the present invention discloses a computer system comprising a chassis for holding a plurality of computer components, a CPU having a heatsink mounted thereon, wherein the CPU is mounted in the chassis, and a first blower having an inlet for receiving air and an outlet for expelling air, wherein the first blower is mounted in the chassis proximate to the CPU. Another embodiment of the present invention discloses a retention clip for use in a computer system, the retention clip comprising a base portion having at least one tab, and a flange portion having at least one mounting hole, wherein the flange portion is connected to the base portion, and wherein the flange portion makes an angle with the base portion.