I replaced the Intel Pro VT nic with an Intel Pro PT nic and Open-E recognizes that nic. I ran out of “quality” nics now so I can't try anymore nics.

Network controllers
ASUSTeK Computer Inc. Marvell 88E8001 Gigabit Ethernet Controller (Asus)
ASUSTeK Computer Inc. Marvell 88E8052 Gigabit Ethernet Controller (Asus)
Intel Corporation PRO/1000 PT Desktop Adapter

I couldn't insert both Intel nic because some cables are blocking the other PCI-e slot.

The latest drivers from Intel support most (may all) Intel Pro nics, for my case both the VT and PT nic: http://www.intel.com/support/network/sb/cs-006120.htm.

I’m going to send the support an e-mail.