I bought an HP Pavilion P6310f tower but it's missing the WIFI antenna. I looked on HP's website, but they only give the model number, 10-Base-T Ethernet. HP also says the "Interface: Integrated into motherboard." When I look at WIFI antennas with the model number, 10-Base-T, those WIFI antennas have LAN ports that go outside the tower case. With the tower that I have, there's only 1 opening for the LAN to go on the outside.