I have installed on my server NIC card 82571EB PRO/1000 AT Quad Port Bypass Adapter [8086:10a0] (rev 06).
Server OS : Ubuntu 11.04 x64
System see my NIC card but can't activate it to use.
Module e1000e don't work for this card.
I download few version of drivers from intel download center and build them.
Modules builded successfull but card don't start up.
Also on few forums I saw info about device like my.
People says that NIC with device ID 8086:10a0 is engineer or test devices and drivers for them not included to drivers release.
Here is partof lscpi from server:
Capabilities: [140 v1] Device Serial Number 00-0e-0c-ff-ff-f9-21-8e
Kernel modules: e1000e