A data transmission device sends image data with reference data relating to a position of at least one illumination device in a virtual audio-visual environment space and illumination control data for controlling each of the at least one illumination device in the virtual audio-visual environment space. The track can be mounted to a front edge of a shelf to allow prominent display of food or beverage containers, as well as promoting more complete use of the space within the display case. The fabric may include two or more holes configured to allow a goggle retention strap to pass through in order to enable the goggle retention strap to form a closed loop. The socket has an insertion opening parallel to the surface of the motherboard so that the display card and the motherboard are parallel to each other after the display card is assembled on the motherboard. Such conditions and disorders include, but are not limited to, hypertension, dyslipidemia, cardiovascular disease, eating disorders, critical care, insulin-resistance, obesity, and diabetes mellitus of any kind, including type 1, type 2, and gestational diabetes. The switch is also capable of forwarding data packets to one of a number of output ports based on a comparison of at least one of the identity parameters that specifies false information to a table stored in memory.