Ethernet driver needed Optiplex GX270

Hi all

Just done a clean windows install on my sons Optiplex GX270 and have lost the driver for the Ethernet network card. Can anyone point me in the right direction or tell me which driver I need. I've checked the dell site for network drivers but they all seem to be for wireless. I need a driver for a wired network. I'll need to download to my P.C then load onto USB drive to then upload to my sons P.C as obviously his computer has no internet

Many thanks in advance

Stuart