Abstract: A foolproof mechanism for a server is disclosed for use in a blade server and/or in a similar electronic apparatus having a chassis to which with an insertion portion of a blade board is inserted and coupled horizontally and is constrained vertically. The foolproof mechanism includes a blade housing mounted on an outer side of the insertion portion, a depression structure formed on the blade housing, and an anti-moving button installed loosely in the depression structure. By gravity, the anti-moving button is automatically sunk in the depression structure while the insertion portion is inserted in a correct orientation, thereby smoothly inserting the insertion portion into the chassis; on the contrary, the anti-moving button is automatically projected out of the depression structure while the insertion portion is inserted incorrectly, thereby blocking the insertion portion from inserting into the chassis, thus preventing the insertion portion and the chassis from being damaged.

Abstract: A foolproof mechanism for a server is disclosed for use in a blade server and/or in a similar electronic apparatus having a chassis to which with an insertion portion of a blade board is inserted and coupled horizontally and is constrained vertically. The foolproof mechanism includes a blade housing mounted on an outer side of the insertion portion, a depression structure formed on the blade housing, and an anti-moving button installed loosely in the depression structure. By gravity, the anti-moving button is automatically sunk in the depression structure while the insertion portion is inserted in a correct orientation, thereby smoothly inserting the insertion portion into the chassis; on the contrary, the anti-moving button is automatically projected out of the depression structure while the insertion portion is inserted incorrectly, thereby blocking the insertion portion from inserting into the chassis, thus preventing the insertion portion and the chassis from being damaged.