8x8 Red 64 LED Dot Matrix Displays 3mm CA

Module Dimensions: Approx. 32 ×32 ×13 mm/ 1.26 ×1.26 ×0.51 inch - As the pictures show, the input port is in the left side of module, and the output port is in the right left of that. - When only control a single module, just need to connect the input port to CPU.