4 pin RJ11 male connector diagram and applications

4 pin RJ11 male used in:

• Macintosh Keyboard This connector is present on the Macintosh 128K, 512K, 512K enhanced, and Macintosh Plus.
• GNS GPS RJ11 Connector 
  
  
  Associated connector:
  
  
  4 pin RJ11 female used in:
  
• Macintosh Keyboard This connector is present on the Macintosh 128K, 512K, 512K enhanced, and Macintosh Plus.