Abstract: A removal mechanism of the daughter board includes a fixed frame, a moving frame, a moved frame and a handle. The fixed frame has a pushed portion. The moving frame is movably coupled to the fixed frame and has an oblique tapered edge. The moved frame is fixed to the daughter board and has a corresponding oblique edge. The handle is rotatably connected to the moving frame and has a pushing portion, and the pushed portion is on a rotation path that the pushing portion rotates with the handle. When the handle is operated, the pushing portion pushes the pushed portion, the moving frame moves relative to the fixed frame to push the corresponding oblique edge by the oblique tapered edge. The moved frame drives the daughter board to be removed from the connector.

Abstract: A removal mechanism of the daughter board includes a fixed frame, a moving frame, a moved frame and a handle. The fixed frame has a pushed portion. The moving frame is movably coupled to the fixed frame and has an oblique tapered edge. The moved frame is fixed to the daughter board and has a corresponding oblique edge. The handle is rotatably connected to the moving frame and has a pushing portion, and the pushed portion is on a rotation path that the pushing portion rotates with the handle. When the handle is operated, the pushing portion pushes the pushed portion, the moving frame moves relative to the fixed frame to push the corresponding oblique edge by the oblique tapered edge. The moved frame drives the daughter board to be removed from the connector.

Abstract: A removable self-unlocking structure includes a case and a frame body. The case has a latching portion. The frame body includes a frame plate, and the frame plate is disposed with a positioning structure. The positioning structure includes a slot and an elastic arm exposed in the slot. When the frame body is exerted by an external force, and the elastic arm is capable of positioning at the latching portion or detaching from the latching portion, so that the frame body can slide relative to the case for increasing the convenience of use.

Abstract: A removable self-unlocking structure includes a case and a frame body. The case has a latching portion. The frame body includes a frame plate, and the frame plate is disposed with a positioning structure. The positioning structure includes a slot and an elastic arm exposed in the slot. When the frame body is exerted by an external force, and the elastic arm is capable of positioning at the latching portion or detaching from the latching portion, so that the frame body can slide relative to the case for increasing the convenience of use.

Abstract: A chassis self-unlock mechanism includes a tray, a handle assembly and a locking arm. The handle assembly includes a fixed base, a handle and a slider connected to the handle. The fixed base is fixed on the tray, and the slider is movably connected with the fixed base. The locking arm is attached to the tray, an end of the locking arm is fixed to the tray, an actuating slope inclined with respect to the locking arm is formed on the locking arm, a latch laterally protrudes from the locking arm, and the latch protrudes out of an outer surface of the tray. The slider is movable to push the actuating slope, so that the locking arm is bent, and the latch retracts into the tray.