Abstract: A motherboard includes a circuit board and a connector mounted on the circuit board. The connector comprises a socket and a latch pivotally mounted on one end of the socket. The latch comprises a body, a pressing member connected to one side of the body and extending outward from one side of the body to the outside of the socket, exposing an area from a side of the interface card for finger pressing. The supporting member is connected to another side of the body, and when the pressing member is pressed, it drives the body to pivot and causes the pushing portion to lift the interface card, and the supporting member stop the body from pivoting by resting against the circuit board.

Abstract: A modulized micro projection device is disclosed. The modulized micro projection device includes a case, a lens, an image module and a connection structure. The lens is disposed on one side of the case. The image module is disposed inside the case for projecting an image onto a screen through the lens. The connection structure is disposed on the outer surface of the case and holding a lighting module for providing light to the image module. Therefore, the lighting module is replaceable such that the luminance of the light can be changed through replacing the lighting module. Another modulized micro projection device is also disclosed.

Abstract: A position adjustment mechanism for laser optics includes a fixed mount, a fastening member, and a position regulation device. The fixed mount is connected to a heat-dissipating mount and positioned near the optics mount. The fastening member penetrates the fixed mount and the optics mount to connect the fixed mount with the optics mount and maintains a gap between the fixed mount and the optics mount. The position regulation device is positioned in the vicinity of the fastening member and in the gap between the fixed mount and the optics mount. The position regulation device presses against the optics mount to adjust the position of the reflective element relative to the light-emitting device.

Abstract: A hollow rod according to the invention includes four plates, and each of the plates has upper and lower edges. The upper edge is provided with at least a projection, and a position corresponding to the projection is provided with at least a recess having a shape corresponding to that of the projection. The projection of each plate is inserted into the recess of another plate adjacent to the upper edge thereof. The edges of the plates are inserted with one another for forming a hollow rod, thereby reinforcing strength and heat resistance.