ITEM NAME:MAX7219 Dot Matrix Module LED 4in1 Display Drive With 5Pin Cable For Description: A single module can drive a 8x8 dot matrix common cathode. Operating Voltage:5V Dimensions:7.3X3X1cm Fixing screws with 64 holes with a diameter 3mm Module with input and output interfaces,support for cascading multiple module. Specification: The left side of the module to the input port,the right to an output port. When the control of a single module,simply input port connected to CPU. When a plurality of cascaded modules,input and output termination CPU,an input terminal of the second output end of the first module a module,the first two modules of the input terminal of the three termination modules,and so on... For example: VCC → 5V GND → GND DIN → P2.2 CS → P2.1 CLK → P2.0 Package Includes: 1 Piece MAX7219 Microcontroller with 5P Line Dot Matrix Module 1 Piece Wire SKU: DMO0011844851000679.A single module can drive a 8x8 dot matrix common cathode. Module with input and output interfaces,support for cascading multiple module. The left side of the module to the input port,the right to an output port.