How can i figure out what company my integrated ethernet port is?

PLEASE HELP ME...

If your integrated NIC is in a laptop look up the manufacturers website and there spec sheet should be able to tell you. Same thing for a desktop computer. If the computer is a generic brand you might have to copy down the bios string during boot up and go to www.motherboards.org and look up the Motherboard manufacturer, then look up the website for support.