In the era of the widespread use of wireless technologies, many users forget about the advantages that a classic cable provides. Connection stability Low latency and minimal signal latency aren't just marketing slogans, but real physical properties of wired data transmission. When you're wondering how to migrate from WiFi to LAN, you're looking for a solution to problems with lag, connection drops, and slow download speeds.
Wireless networks are susceptible to a variety of factors, from wall thickness to microwave operation. Switching to a wired connection Ethernet This eliminates external interference and allows you to get the maximum speed your provider provides. This is especially important for gamers, streamers, and anyone who works with large amounts of data.
However, the switching process itself can be challenging for inexperienced users. It's not just physically connecting the devices, but also setting priorities correctly in the operating system. In this guide, we'll cover all the nuances, from choosing the right cable to fine-tuning network adapters.
Advantages of a wired connection over a wireless one
The main argument in favor wired connection The key is speed predictability. A WiFi signal constantly fluctuates, resulting in what's known as "jitter"—a variation in the delay in transmitting data packets. Cable eliminates this drawback, ensuring a smooth flow of information without ping spikes.
Furthermore, local network security is higher when using a LAN. It's much easier for an attacker to intercept data transmitted over the air than to gain access to a physical port inside your apartment. WPA3 encryption secure, but physical access to the cable requires direct entry into the premises.
It's also worth noting the absence of electromagnetic radiation in living spaces. While modern routers are safe, reducing the number of active emitters in a bedroom or children's room is often a priority for health-conscious users.
- 🚀 Maximum channel throughput without losses on the air.
- 🛡️ Increased protection against unauthorized access from outside.
- 📉 No delays caused by radio channel congestion by neighbors.
- 💻 Stable operation of network resources and NAS storage.
⚠️ Note: Category 5e cable supports speeds up to 1 Gbps over distances of up to 100 meters. For speeds above 1 Gbps and distances longer than 100 meters, Category 6 cable or higher is required.
Necessary equipment and cable preparation
To set up a wired connection, you will need the appropriate equipment. The key element is a network cable, known as twisted pairThe ends of the cable must have RJ-45 connectors. It's important to choose the correct cable category to avoid artificially limiting your internet speed.
Modern routers are usually equipped with ports Gigabit Ethernet, which are marked yellow or labeled "LAN." Computers and laptops also have corresponding ports, although in Ultrabooks, these are often replaced by USB-to-Ethernet adapters. Make sure your adapter supports the required speeds.
If a cable runs throughout an entire apartment, it's worth considering its protection. The wire can be hidden in the baseboard or special cable channels can be used. This not only provides an aesthetically pleasing appearance but also protects the wires from physical damage that could lead to loss of contact.
- 🔌 Category 5e or Cat 6 UTP cable extending to the connection point.
- 🖥️ Network card supporting 100/1000 Mbps speeds.
- 🔧 RJ-45 connectors and a crimping tool (if you're making your own).
- 🏠 Cable channels or baseboards with space for wiring.
When choosing a ready-made patch cord, pay attention to the quality of the insulation. Cheap cables may be too stiff or, conversely, too soft, indicating poor quality copper inside. Cables marked CCA (copper clad aluminum) are not recommended for trunk lines., since they are more brittle and have poorer conductivity.
Physically connecting devices to the router
The physical connection process is simple, but requires careful attention. Locate the group of ports on the back of your router; there are usually four, labeled as LAN 1, LAN 2 and so on. Don't confuse them with the port. WAN or Internet, which is intended for the incoming cable from the provider.
Insert one end of the cable into an available LAN port on the router until it clicks into place. The latch should lock securely. Connect the other end to the network port on your computer or laptop. If you're using a laptop without a built-in port, connect a USB adapter.
Once connected, pay attention to the indicators near the port. They typically light green or orange, indicating physical contact. Flashing indicators indicate active data exchange between the devices.
- 🟢 The indicator is constantly on - there is a physical connection.
- 🟡 The indicator is blinking - data is being transferred.
- 🔴 The indicator is not on - check the cable and ports.
- 🔵 Blue light (on some models) — connection 1 Gbps or higher.
⚠️ Note: Port interfaces may vary between manufacturers. Some ASUS or TP-Link models may have combined ports, making no difference between WAN and LAN, but the classic setup requires connecting to a LAN group.
☑️ Checking the physical connection
Setting Network Priority in Windows
Often the operating system switches to the cable automatically, but sometimes WiFi remains the priority. To force Windows to use LAN connection The main thing is to change the interface metric. This will force the system to consider the wired network as "cheaper" and preferable for traffic.
Open the Network Control Panel and find your active connection. Go to the protocol properties. Internet Protocol version 4 (TCP/IPv4)In the lower right corner, click the "Advanced" button. Here you will see a checkbox next to "Automatically assign metrics." Uncheck it and enter the value in the "Interface metric" field. 10.
For the WiFi adapter, follow the same steps, but set the metric to 20 or higher. The lower the number, the higher the priority. After applying the settings, the system will always choose the cable connection if it's connected, ignoring the wireless network for primary traffic.
| Parameter | LAN Value | Importance for WiFi | Result |
|---|---|---|---|
| Interface metrics | 10 | 50 | Cable priority |
| Interface metrics | Auto | Auto | System selection (often random) |
| Interface metrics | 50 | 10 | WiFi priority |
| Disabling the adapter | Included | Disabled | Cable only |
⚠️ Note: Some corporate networks may have security policies that prohibit changing metrics. In this case, please contact your system administrator before making changes.
Router Configuration: Disabling WiFi or Separating Networks
If you want to completely eliminate the wireless signal, you can disable the WiFi module in the router settings. To do this, log in to the device's web interface, usually at 192.168.0.1 or 192.168.1.1. Find the section Wireless or "Wireless" and uncheck "Turn on wireless."
However, it's often more convenient to simply separate the networks. You can leave WiFi for guests or smart devices, and use a cable for the PC. In this case, it's important to ensure that the DHCP server assigns addresses correctly to both connection types. Some routers allow you to create guest networks isolated from the main LAN.
Modern dual-band routers (Dual-Band) can combine 2.4 GHz and 5 GHz networks under a single name. This doesn't interfere with switching to a LAN, but it can create confusion during diagnostics. It's recommended to assign unique SSID names for different bands if you plan to fine-tune the settings.
Diagnosing and troubleshooting connection problems
Even with a proper connection, problems can still occur. If the lights are on but there's no network access, run Windows' built-in diagnostics. This often automatically resets the DNS cache or reinstalls the adapter driver. This is a basic but effective step.
Check your network card drivers. Go to Device Manager and make sure there are no exclamation marks for your controller. Sometimes the system installs a generic driver that is unstable. Download the latest version from the motherboard or laptop manufacturer's website.
If the speed is lower than expected, check the negotiated speed. The connection status should indicate 1.0 Gbps. If it is indicated there 100 Mbps, this means that the cable is damaged (one of the 8 wires is not in contact) or the router port is old.
- 🔍 Check the integrity of the cable visually and with a tester.
- 💾 Update your network card drivers to the latest version.
- 🔄 Reset TCP/IP settings with the command
netsh int ip reset. - 🔌 Try a different LAN port on your router.
Frequently Asked Questions (FAQ)
Do I need to turn off WiFi if I have a cable connected?
No, it's not necessary. Windows prioritizes the wired connection by default if both adapters are active. However, if you want to save power or avoid any potential IP address conflicts, you can disable WiFi either programmatically or through the router interface.
Is it possible to use one cable for both the Internet and a local network?
Yes, when connected via a router, you gain access to both the global network (the Internet) and local devices (printers, NAS, other PCs) if they are on the same subnet. A LAN cable connects all devices into a single network.
Why is the cable speed lower than stated by the provider?
There could be several reasons: a low-category cable (Cat 5 instead of 5e), an old network adapter (Fast Ethernet 100 Mbps instead of Gigabit), or an overloaded router processor. Also, check your ISP's personal account to see if it's throttling your wired connection speed.
How do I know if my cable is working at full speed?
Go to "Network Connections" (ncpa.cpl), double-click the active connection, and look in the "Speed" field. It should say 1.0 Gbps. If it says 100 Mbps, the cable or port doesn't support gigabit.