Ethernet not showing

I recently purchased a refurb Mac Pro.  For some reason I can't get the ethernet port to work.  I ran a diagnostics and it doesn't even show up as active.
Any help would be appreciated.
I was thinking about purchasing a USB-to-Ethenet adapter if all else fails

Open System Preferences, Network, and click the question mark next to the Advanced button for help on setting Network up.

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      Slot:          Thunderbolt Slot 2@11,0,0
      Vendor ID:          0x14e4
      Device ID:          0x16b0
      Subsystem Vendor ID:          0x106b
      Subsystem ID:          0x00f1
      Revision ID:          0x0010
      Link Width:          x1
      BSD name:          en2
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    AppleIntel8254XEthernet.kext          IOEthernetAVBController.kext
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    Apple Application Support 2.1.6
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    CD Driver 2.2.0.1
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    Description:            Atheros L2 Fast Ethernet 10/100 Base-T Controller - Packet Scheduler Miniport
    IP Address:             192.168.1.5
    Subnet Mask:          255.255.255.0
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    DHCP Enabled:      Yes
    DHCP Server:         192.168.1.1
    Lease Obtained:     Sat Dec 31 13:46:09 2011
    Lease Expires:       Tue Jan 03 13:46:09 2012
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    Connected:             Yes
    Online:                    Yes
    Using Modem:        No
    Using LAN:             Yes
    Using Proxy:           No
    SSL 3.0 Support:     Enabled
    TLS 1.0 Support:     Enabled
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