The reason and solution of not entering the key of wireless network in notebook Internet

My home is a fast 54M wireless router access to the Internet. With a x220t notebook, the result is always unable to enter the key to access the wireless network, always dragging a long cable, very uncomfortable. Today suddenly found that the original is the "security type" of the value always selected as "wpa2-Enterprise." The correct settings are as follows: computer

However, can only blame oneself stupid: a stupid oneself forgot to enter the router password (set too complex, I have forgotten); two stupid is not understand: a less than hundred 54M wireless router, with the 4 LAN interface can see only four cores of copper wire, the remaining four were omitted. With such a work of the router, do you expect it can provide wpa2-enterprise safety standards?