A lifting structure in the form of a release hook configured to conveniently and easily release computer components from their supporting structure by a simple pivoting action in response to lifting of thumbscrews. A typical computer component would be a PCIe card within a GPU tray. The lifting structure does not require the use of tools to release the computer components, and can be used where computer components ordinarily cannot be released by human fingers due to limitations of space. The lifting structure lifts the computer component to a height where the computer component can then be easily grasped by human fingers for removal of the component.