Wifi Connection Problem

[CollegeBoy7]

So I managed to build my own PC. Now the only problem I seem to have is that it does not connect to any wifi, or any network in the area. It says that I should connect an Ethernet cable but my motherboard doesn't seem to have a port for one. I looked up some solutions online, and they told me to either install a WLAN card onto my motherboard, or get a USB. I'm not sure which one to do. The motherboard I have is a ASUS Z170 Pro Gaming.

 

[RealBeast]

Your motherboard has an Ethernet (LAN) port on the back panel but it does not have a wireless adapter unless you added either a PCIe or USB wireless adapter.