We had a Dell Server with a Broadcom team of NIC’s running Microsoft Windows Server 2008 R2. The motherboard died and was replaced with a new one and got new NIC’s that we needed to add to the team. Every time we tried to add the NIC to the existing team we got the following error message:
 Broadcom BCM5708C NetXtreme II GigE (NDIS VBD Client)
#2 does not support teaming.
Please select an adapter with NDIS 6 driver.
In looking at the Device Manager go to the View menu and choose “Show Hidden Devices” and you’ll see two entries for each of the network adapters:
Broadcom BCM5708C NetXtreme II GigE (NDIS VBD Client) #5
Broadcom BCM5708C NetXtreme II GigE (NDIS VBD Client) #5 Teefer2 Miniport
The second Teefer2 Miniport driver is added when Symantec Endpoint Protection (SEP) is installed on the server. This driver is used for the firewall features in Symantec Endpoint Protection.
In order to get the teaming working again, we uninstalled Symantec Endpoint Protection, then setup the team, then rebooted the server and reinstalled Symantec Endpoint Protection.