Wired Network: Speed and Duplex Settings for Mac OS X

1. 1. Click the Apple menu and select System Preferences.

      

   2. In the Internet & Network section, double-click the Network icon.

      

   3. From the left-hand display menu, select Ethernet.

      

   4. Click the Advanced button.

      

   5. Click the Ethernet tab.

      

   6. Click the Configure pull-down menu and select Automatically.

      

   7. Click OK.

1. Click the Apply button and close System Preferences.

NOTE:  Full duplex means that the network adapter can send and receive packets at the same time.  Half duplex means that the network adapter performs only one operation at a time; it either sends or receives packets.