Abstract: A dummy memory board includes a substrate, a connecting finger, a plurality of light emitting diodes, and an electrical circuit. The substrate has a front surface and a back surface, and is provided with at least one dummy memory region. The connecting finger is close to a lower edge of the substrate for inserting into a memory slot. The light emitting diodes are on the substrate and close to the upper edge of the front surface and the back surface. The electrical circuit is on the substrate for connecting the light emitting diodes to the connecting finger. Thus, power from the memory slot is transferred to the light emitting diodes through the connecting finger, and the light emitting diodes are turned on to demonstrate the desired light effect. Particularly, the electrical circuit has no suspending node or open spot and interference due to antenna effect is avoided.

Abstract: A memory module and a method of manufacturing the same are disclosed. The memory module includes a substrate, at least one memory, a mask film and at least one light emitting diode. The substrate includes electrical circuit and golden fingers, and a notch is provided at the upper rim of the substrate. The mask film is formed of opaque copper foil, and has a notch and at least one hole close to the upper rim of the substrate. The light emitting diodes are configured on the substrate and connected to the electrical connection circuit, and each light emitting diode is provided at the corresponding hole of the mask film. Thus, light generated by the light emitting diodes passes through the hole and travels outwards along the upper rim of the substrate to form a specific bright pattern, text or strip, thereby enhancing a sense of vision.