Why can my computer only be connected to the Internet with a fixed network cable?

You can go to the official website of your computer brand** network card driver, to two, one is the network card driver of the notebook itself, and the other is the driver of wireless Internet access, the driver should match your machine model and system. If it doesn't work, reinstall the system or go to the computer store to find a professional to help you solve the problem, I hope it will help you!

No, you don't. Plug the network cable directly into the router, and you can use it after debugging.

You can debug your router by following these steps:

1. First of all, we need to connect the cat and the wireless router together. The network cable is first connected to the LAN on the modem, and the other end is connected to the WAN on the wireless router.

2. My computer system XP, take XP as an example, the steps of win7 are the same, one is a local connection, one is an online neighbor, this is still easier to distinguish. First, click on Local Connections and then right-click on Properties.

3. Then keep going down in the interface that comes out, find an Internet protocol, and double-click to open it.

4. Then all the interfaces that come out will be selected on the button that is automatically obtained, and click OK after setting.

5. Then call your browser, enter and enter your password. It's all admin.

6. After entering, enter the interface of the fast network and click the setup wizard on the left.

7. After clicking, in the interface that comes out, click Next directly.

8. Click Next. The default in the interface is to let the router choose the appropriate way to surf the Internet, and there is no need to change it directly to the next step.

9. Then there will be an account password to enter, which is your account and password that you will be told when you install broadband, enter it directly and click Next.

10. Then come out of the interface and choose what you need. Set the name and password of the router, and click Next after you have set it.

11. Then after clicking, an interface will come out for you to check the parameters you set, and click the save button after confirming that it is correct.

12. After saving, a setting status will come out, and you can check the current situation of your own settings, and at this point, the setting of wireless routing will be completed.

A network cable is a connection that provides a limited network connection. A network cable has two ends, one end is connected to a router or other network device, and the other end is connected to a computer.

Therefore, a network cable must only provide Internet access to one computer.

Wireless routers, can be through the wireless signal to the surrounding space to diverge signals, around the wireless network card of the computer, receive this signal, through the verification, can go online. Therefore, the wireless network can provide a network of multiple terminals.

Internet access is required to have a signal source, if you have broadband installed at home, just plug in the network cable to connect broadband to access the Internet, when there is available wifi nearby, there is no network cable can be connected and then go to the Internet, but only one network cable without a signal source is not allowed to access the Internet.

This is because the PC is connected to the switch using a straight-through wire method.

The PC-to-PC is connected with a crossover line.

Standard connection for twisted pairs.

Twisted pair cables are generally used for the cabling of star networks, and each twisted pair connects various network devices through RJ-45 connectors (commonly known as crystal heads) installed at both ends. The standard connection of twisted pair cables is not arbitrarily specified, and the purpose is to ensure the symmetry of the cable connector layout, so that the interference between the cables in the connector can cancel each other out.

Category 5e cable is the most commonly used network cable for network wiring, which is divided into two types: shielded and unshielded. If it is used outdoors, the shielded wire is better, and the unshielded Category 5 wire is generally used indoors, and because there is no shielding layer, the cable will be relatively softer, but the connection method is the same. In general, there are four pairs of thin wires twisted together and marked with different colors.

There are two ways to connect twisted pairs: EIA TIA

568B standard and EIA TIA

568a standard.

Set the tail of the crystal head downwards, from left to right, as 1

The following is the distribution of each port line.

T568A line sequence.

Green and white. Green. Orange-white. Blue. Blue and white. Orange.

Brown and white. Palm tree. T568B line sequence.

Orange-white. Orange. Green and white. Blue. Blue and white. Green.

Brown and white. Palm tree. Generally. Straight line: Both ends are connected according to the T568B line sequence standard.

Cross wire: one end is connected according to the T568A line sequence, and the other end is connected according to the T568B line sequence.

That is, there are several situations:

1) Peer-to-peer network (direct interconnection of the network cards of two computers): the cross-wire connection method is adopted, and the two termination methods of the network cable are different.

2) Network card and switch (or hub): use the straight-through line connection method, and the network cable is terminated in the same way.

3) Switch and switch (or hub) cascade: the cross-wire connection method is adopted, and the network cable is terminated differently.

If you are dialing up the Internet, there is no way to access the Internet at the same time without a router or shared Internet software. If you don't go to the Internet at the same time, check the network settings of the cable (compare it with the computer that can access the Internet), and the operator can't connect it if you bind it to your Mac.