Abstract: The invention herein is an ejection mechanism for a computer expansion card. Specifically it is for a 2-stage ejection mechanism for the expansion card that inserts in the computer. The ejection mechanism includes a body, push lever, triggering rod, etc. The push lever is made up of the travel and swinging controllers for the travel guide and swinging guide channels of the body. With the coordinated actions of the components, the push lever remains flush or is hidden within the computer housing under normal circumstances. When the user wishes to eject the card, the push lever head may be actuated to protrude from the computer housing to ease the operation of the ejection, hence the 2-stage ejection mechanism and its consequent uniqueness.

Abstract: The present invention is a two-stage ejecting device for the expansion slot of a computer; the device consists of a main setting, a push rod, and a drive link, wherein the rod contains a pivot arm whose position is in accordance with a guidance on the main setting; the coupling between the arm and the guidance leads to the formation of a two-stage ejecting device in that the push rod is fully contained in the computer case under normal condition and it can be activated to extend out of the case to the operator's convenience under the condition that the ejection of a cartridge is needed.

Abstract: A clamp fixing structure for connecting circuit boards. The structure includes an inlet slot terminal on each end of a connecting socket and a fixing set to be assembled with each terminal. Below and adjacent to the terminal are a catch slot and fixing holes, and a vertical slide guide is on one side of the terminal. On the fixing set, at corresponding mating positions of the catch slot, fixing holes, and slide guide of the terminal are respectively hook, inserting pins, and a slide to firmly fix a metal clamp when the fixing set is assembled with the inlet slot terminal.