new pc build won't connect to the internet

[Rinv18]

Hey Guys,
Just built a new pc and everything came out great when it came to putting it together. But now after I installed the os and tried to connect to the Internet via wired connection, My system says there are no available connections. The ethernet port on the back doesn't light up. I haven't installed any drivers bc my pc doesn't have a cd reader so I'm lost as to what I should do. Any help would be great.
The motherboard is a gigabyte g1 gaming z97

 

[cin19]

Try download and install the "BigFoot LAN driver" from the gigabyte site http://www.gigabyte.com/products/product-page.aspx?pid=4952#driver
Also you need the "Intel Management Engine" driver, and intel chipset driver too.