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I have Windows 7 installed in my laptop. When I pluged eithernet to my router at home, Windows name the adapter as "Local Area Connection", when I connect my laptop at office, it name the adapter as "Local Area Connection 2". I have similar network devices and configurations at home and office.

I noticed that when Windows consider it connected to a new network, it does 2 things.

  1. Change the name of the network adapter to "Local Area Connection 2" (and next time "Local Area Connection 3", etc).

  2. It prompt a dialog to let me choose the network location ("Home", "Work" and "Public").

What is a "new connection" considered by Windows. Maybe ip address or DHCP settings?

share|improve this question
Do you happen to use a docking station at work? That could have its own NIC built in. – TheUser1024 Mar 10 '14 at 23:12
@TheUser1024 Nah. I plug eithernet wire to the same adapter in my laptop. – Hongbo Mar 10 '14 at 23:17
The adapter should not go away when you unplug the cable; is it a USB ethernet adapter? Do you plug it into a different USB socket? – TessellatingHeckler Mar 10 '14 at 23:47
@TessellatingHeckler It not gone way, Windows change the name of the adapter when it consider I connected to a new network. – Hongbo Mar 11 '14 at 0:15
@Hongbo Do you have some network management software installed that came with the laptop, maybe? Something from HP or Acer or NetGear or whoever? – TessellatingHeckler Mar 11 '14 at 0:45

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