On MAC OS, to access to your Zappiti NAS, select "go" and "connect to server..."

Then search zappitinas

Sometimes you need to enter a “user” and “password” :

• Enter “guest” and “guest” in “user” and “password” fields.
• If it not works please enter "guest" in "user" and let the password fields empty.
  

Then you should be able to access your Zappiti NAS through your local network.