Network connection normal speed fast time slow

Fault phenomenon: An Internet café, the network card for the computer 10/100mbps Adaptive network card, switch for Full-duplex 10/100 Mbps switch. The network connection is normal, but when surfing the net, the network speed is slow and unstable quickly.

Fault analysis and elimination: According to the fault analysis, this fault may be a network cable problem, switch problems, or the problem of networking settings caused. First check with Ping, there is no switching phenomenon; Then check the network settings, no problems found, and then check the cable and switch, and found that the converter lights, always in the ten Mbps and Mbps two working state conversion. After carefully checking the properties of the network card in the computer, it is found that the speed specified in the "value" of the network card on the Advanced tab is "Auto" and is corrected after it is converted to Mbps (full).