Mac OS X: Add contact service (CardDAV) in Contacts.app

Important Notes

Requirements

Step-by-step configuration

1: Open application System Preferences:

2: Click Internet Accounts:

3: on right panel, click Add Other Account at the bottom

4: choose Add a CardDAV account in popup window

5: Choose Advanced in the Account Type drop-down menu, then fill up the form with your server address and email account credential

That's all.