Can someone tell me why this device showed up on my device list yesterday when I pause it I can no longer reach any website via my pc, but I can via my phone. what is its purpose and why is there no information regarding it.
It's probably a device with an Intel network adapter whose MAC address ends with "82FC". Look for a device with a matching address.
aurorablueheart, it sounds like this IntelCor devices showing in your xFi may be your computer. As devices join the home network, xFi assigns a default name which will be the Manufacturer + last 4 of the MAC Address. If you select this device from your Devices list, and then select Device Details, you should be able to view the full MAC Address of the device as well as the Connection Type to your Network (either WiFi or Enternet). These may help you confirm what device it is.