A modular footwear display system includes a display module having a display surface for supporting an item of footwear and a divider for identifying boxed footwear associated with the displayed item of footwear. The heat-dissipating fan includes a bottom housing, a top cover mounted on the bottom housing to form a space therebetween, and a rotor with a plurality of blades accommodated in the space. Each set of DL control resource blocks is associated with a corresponding set of beamforming weights. Using otherwise conventional miking techniques, a wider range of attack and tone characteristics can be obtained from the drumhead.