The computer was custom built.....the person who built to computer for my mom (it was a computer she used for work) did not give us the disc. The motherboard is an Asus M4A88TD-V EVO/USB3. The ethernet controller is pci bus 6. device 0. fucntions 0. I do not have internet on the computer being fixed, obviously, and I am currently trying to find the driver on a separate computer in order to install it. I went to the ASUS website; however, the drivers would not download off my Flash drive. I have been searching for the ethernet controller all day and have come up empty. I would really like to not have to buy a new motherboard so if you guys could off me help on what i might be doing wrong I would really appreciate it.