mi macbook no reconoce los SC2900

Hola buenas tardes, alguien me podria ayudar ya que trato conectar los sc2900 a mi macbook y no me los reconoce, tengo ios Sierra 10.12


Hello good afternoon, someone could help me since I try to connect the sc2900 to my macbook and I do not recognize them, I have Sierra 10.12

Thank you