Is our school, to upgrade the network recently, don't let connect outside network, all switch to the campus network, but also can't directly connected, desktop can only buy wireless card, but I can't really card, and then I pull the line, figure 1 should be a router, direct and found a terrible problem, direct + WLAN used at the same time, the test speed up to 7 MB/s, WLAN is only 200 KB/s, is so low, so bored, only direct no net directly, but direct set and WiFi is not cannot be used at the same time, I saw the IP address is different also, the first even at the same time, fast test, but can't open web pages, campus network have student id certification page, use at the same time, the certification page can't open, a great god ask, is the issue of agreement, and addresses the problems, and really ask once, I was not testing, personal technology very vegetables, was a sophomore, and validate the