I have a MacBookPro and when I go to Systems to add a printer I can't add a printer? Thanks

Sorry I didn't read the whole ? MacBook Pro (Retina, 15-inch, Mid 2015)Model Name: MacBook Pro

  Model Identifier: MacBookPro11,4

  Processor Name: Quad-Core Intel Core i7

  Processor Speed: 2.2 GHz

  Number of Processors: 1

  Total Number of Cores: 4

  L2 Cache (per Core): 256 KB

  L3 Cache: 6 MB

  Hyper-Threading Technology: Enabled

  Memory: 16 GB

  System Firmware Version: 428.40.10.0.0

  OS Loader Version: 540.40.4~45

  SMC Version (system): 2.29f24

It is not the printer yet? My computer want let me add one?