The device itself is labelled PRO1000CT Desktop Adapter (accord to the sticker on the physical device). It's installed in a Win7 machine. The original driver that was installed by default is "Intel(R) Gigabit CT Desktop Adapter" - Driver provider Intel, Driver date 12/4/2009, Driver version 18.104.22.168, e1q6232.sys. I've installed http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=18718&ProdId=3025&lang=eng and am told that was the correct course of action.
The problem is the Auto-Negotiate and 1Gbps settings don't work. It doesn't detect any sort of link (I've tried it with two different computers, using two different ethernet connections (NVIDIA nForce Networking Controller, Provider Microsoft, Date 10/17/2008, Version 22.214.171.124, nvm62x32.sys in one machine and Intel 82567v-2 gigabit network connection, Provider microsoft, date 18/08/2008, version 10.0.2.2, ely60x64.sys in the other), with two different ethernet cables.
I know the other devices work because I have a 2nd NIC in the same machine as the problem NIC which links just fine using Auto-Negotiate and the 1Gbps setting.
I'm not sure what else I can do. I ran the diagnostic tests provided in the driver download and everything passed except the connection test because I had to force 100Mb: