Description:

   This display is designed for out Drag-It-Anywhere® System and will need to be soldered to the 5-pins if replacing in Racing display.
A single module can drive a 8×8 dot matrix common cathode
Operating Voltage: 5V
Dimensions: 12.8X12.8X1.3cm/
Holes with a diameter 3mm
Module with input and output interfaces, support for cascading multiple modulesWiring Instructions:
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 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…Color： BLUE

For example:
VCC → 5V
GND → GND
DIN → P2.2
CS → P2.1
CLK → P2.0    Package Included:
1 x MAX7219 Microcontroller 4 In 1 Display Dot Matrix Module BLUE