Check the video at 0:05-0:07 in. The bios is clearly set to have the wired NIC on with PXE.
One other thing to note, since I 100% recognize that particular manufacturer's BIOS.. that "server" (quotes because it's not an enterprise server-class machine) also has Intel ME on it. Which means settings in the BIOS can be changed remotely, as well.
Check the video at 0:05-0:07 in. The bios is clearly set to have the wired NIC on with PXE.
One other thing to note, since I 100% recognize that particular manufacturer's BIOS.. that "server" (quotes because it's not an enterprise server-class machine) also has Intel ME on it. Which means settings in the BIOS can be changed remotely, as well.