Abstract: A hard disk drive filler (HDD filler) detachably installed in a case is disclosed. The HDD filler has a frame body, a guiding device, and a gravitational sliding device, wherein the frame body defines a bottom surface and a top surface corresponding to the bottom surface. The guiding device is situated on the frame body and combines with the gravitational sliding device. The gravitational sliding device is confined and guided by the guiding device, such that the gravitational sliding device can slide along a certain direction for staying within or exposing at least a part of the gravitational sliding device to the frame body due to gravity. If the frame body is installed in the case while the bottom surface is upward, the gravitational sliding device slides and is guided by the guiding device to be partly exposed to the frame body to stop the installation.

Abstract: An energy-saving lamp includes a light emitting module, a light sensing module and a control module. The light emitting module includes a plurality of light emitting diodes for emitting light. The light sensing module detects a light intensity of the light emitting module and generates a detection signal according to the light intensity of the light emitting module. The control module receives the detection signal generated by the light sensing module and adjusts the total number of lit up light emitting diodes of the light emitting module according to the detection signal.

Abstract: A mouse includes a BLUETOOTH module, a display device, and a switch unit. The module searches within a range and discovers computers in which a function has been enabled. The display device displays identification information of the discovered computers. The switch unit is operable to scroll through the discovered computers and select one computer, and enable the module to establish a connection between the selected computer and the mouse.

Abstract: An energy-saving lamp includes a light emitting module, a light sensing module and a control module. The light emitting module includes a plurality of light emitting diodes for emitting light. The light sensing module detects a light intensity of the light emitting module and generates a detection signal according to the light intensity of the light emitting module. The control module receives the detection signal generated by the light sensing module and adjusts the total number of lit up light emitting diodes of the light emitting module according to the detection signal.