1. It can be judged by the Cat.5, Cat.5e, Cat.6, etc. of the outer skin of the network cable. The complete CAT-5e cable is printed with something like "24AWG/4P UTP TIA/EIA 568-A CATEGORY 5E LOCAL AREA NETWORK CABLE ”.5 or next is 100M, 5e is gigabit network cable, 6 or 7 is 10G network cable.

2. For some non-standard network cables or network cables that have been severely worn, the similar information above cannot be seen on the outer skin, which can be judged by the signal lights of the network equipment. Many network devices now have different indicators for different network speeds. As shown in the figure below, each network port has two green lights on the left and right. The left side lights up to indicate a 100M rate, and the right side light indicates a 10M rate. Both of them are on to indicate that a 1000M device is connected. Of course, switches, network cables, and devices connected to switches all support 1000M, and this 1000M will only be on. If you don't have a gigabit device, this method can't tell.

3. You can view the network card information of the computer. If your network card supports 1000M, your switch or router also supports 1000M. After connecting the computer and the router with this network cable, the computer's network card information will be displayed as follows:

The above is the relevant introduction of "How to distinguish 100M network cable and 1000M network cable?", I hope it can help you. To learn more about this,