Does anyone know what these highlighted in red mean? trying to replace in a CNC controller and want to make sure I order the right part but am having trouble finding a match. Thanks

 

The two lines give manufacturing information and is not relevant to your selection. Only the second line matters.

 

M4T28-BR12SH1 Price & Stock

 

The two lines give manufacturing information and is not relevant to your selection. Only the second line matters.

Much appreciated, wanted to make sure before I ordered