I recently upgraded my motherboard from the stock Dell motherboard to the Asrock Fatal1ty Z97. I was surprisingly able to install everything without a hitch, but I did notice something recently. When I shut down the computer, it seems to still be active on the ethernet. The lights beside the ports on my computer and router blink, as if data is still being transmitted on the network. I have not yet checked to see if the computer is visible on the other computers on my network, but it is something that I was not seeing before the upgrade. Not very familiar with Asrock systems, so I'm not sure if there is something in the UEFI or elsewhere that controls this.