Get the pba/pwa number which can be found on the NIC card.
Then check from the website below for appropriate driver download
All the best,
The driver you are using is the driver that comes with Windows 7 and is the latest driver. There is not any newer driver to download.
Some adapters, such as the one you are using, will not have any newer drivers. You can go to the Is my Intel® Ethernet Adapter supported in Microsoft Windows 7*? page for more details.