Switching from a wireless to a wired connection is a classic step for anyone experiencing an unstable signal, low speeds, or the need for maximum ping in online games. Many users mistakenly believe that simply plugging the device into the socket is sufficient, but for the priority system to function correctly and avoid background radio module conflicts, the correct sequence of actions is required.
In this article, we'll cover in detail how to programmatically disable the Wi-Fi adapter in the operating system, how to physically connect a LAN cable, and how to ensure that traffic is actually transmitted over the wire and not over the air. You'll also learn the intricacies of setting network interface priorities in Windows, which is especially relevant for gaming PCs and workstations, where every millisecond of latency matters.
Before tweaking settings, make sure you have a working patch cord (twisted pair cable) and a free port on your router or switch. Ignoring a basic physical layer check can result in wasted time on software adjustments that won't work due to a simple broken wire or faulty connector.
Physical connection and cable testing
The first step is always physically connecting the equipment. You will need a cable of the type Vitaya Para (twisted pair), most often Cat5e or Cat6. One end of the cable is plugged into any available port. LAN on your router, and the second one - into the network card of your computer or laptop.
Pay attention to the indicators. Unlike Wi-Fi, where the status is visible on the screen, a wired connection is usually indicated by an LED next to the RJ-45 connector. If the indicator lights up or starts flashing green/orange, physical contact has been established and an electrical signal is flowing along the line.
- 🔌 Make sure the cable is inserted until the latch clicks into place.
- 🔌 Check that the cable is not too twisted or pinched by furniture.
- 🔌 If the indicators are not lit, try a different port on the router or replace the cable.
⚠️ Note: If you are using a laptop, make sure it is not in power saving mode, which may turn off power to USB ports or the network card to save battery power during setup.
It's important to understand the difference between a physical connection and internet access. The port indicator only indicates that the computer "sees" the router. Further configuration is handled by the operating system, which must correctly handle the connection of the new interface.
Disabling Wi-Fi in Windows
Once the cable is connected, it's recommended to disable the wireless adapter programmatically. This will not only ensure all traffic is routed to the LAN port, but also free up system resources and eliminate potential IP addressing conflicts when the system attempts to use both channels simultaneously.
To do this, go to the menu Start and select Parameters (gear icon). In the window that opens, find the section Network and Internet. In the left part of the menu, select the item Wi-Fi, and then switch the slider to the state OffThis is the fastest method available in modern versions of Windows 10 and 11.
A more in-depth control method is available through the Network Connections control panel. Press the key combination Win + R, enter the command ncpa.cpl and press Enter. A window will open with all your network adapters. Find the icon with the name Wireless network or Wi-Fi, right-click on it and select Disable.
☑️ Check for Wi-Fi disconnection
After disabling, the network icon in the system tray (near the clock) should change. Instead of a fan of waves, you'll see an image of a monitor with a cable. This is visual confirmation that the system has switched to a wired connection. Now you can check the connection status and speed.
Setting the priority of network connections
Even if Wi-Fi is enabled, Windows prioritizes a wired Ethernet connection by default. However, in rare cases, interface metrics can be changed by the user or third-party software, causing traffic to flow through the network, reducing performance.
To force the priority, open the network connections window again with the command ncpa.cplRight click on Local Area Network Connection (Ethernet) and select PropertiesIn the list of components, select Internet Protocol version 4 (TCP/IPv4) and press the button Properties, and then Additionally.
At the bottom of the window, uncheck the box Automatic metric assignmentIn the field Interface metrics enter the value 10The lower the number, the higher the priority. For Wi-Fi, you can do the same, but set the value to something like, 100.
| Parameter | Meaning for Ethernet | Importance for Wi-Fi |
|---|---|---|
| Automatic metrics | Disabled | Disabled |
| Interface metrics | 10 (High priority) | 100 (Low priority) |
| Protocol | TCP/IPv4 | TCP/IPv4 |
| Status | Active | It is advisable to disable it |
⚠️ Note: Changing metrics is rarely necessary, as Windows intelligently distributes traffic. Only do this if you notice traffic leakage over Wi-Fi when a cable is connected.
This manual configuration is useful for corporate networks or complex home configurations with multiple gateways. For the average home user, simply disabling the Wi-Fi module, as described in the previous section, is sufficient.
Diagnosing and checking connection speed
After switching, you need to ensure that the connection is working correctly and at the expected speed. The easiest way is to open any browser and run a speed test on a specialized resource, such as Speedtest or Fast.com. Compare the results with your provider's rate.
A more technical way to check is to use the command line. Click Win + R, enter cmd and press Enter. In the black window, enter the command ipconfig. Find the section Ethernet adapter. If in the lines Main gateway And IPv4 address numbers are indicated (usually starting with 192.168...), which means there is a connection to the router.
To check the connection quality, use the ping command. Enter ping 8.8.8.8 -tYou will see lines with responses from the Google server. Pay attention to the parameter time= (response time). For a wired connection, a value of 1 to 10 ms within the local network and 10-40 ms to external servers is considered normal.
- ⚡ High ping (>100 ms) may indicate background downloads or problems with your ISP.
- ⚡ Packet loss (lines like "Timeout exceeded") indicates a bad cable or channel congestion.
- ⚡ Stability is more important than maximum speed: ping spikes are worse for gaming than just low speed.
If the speed is significantly lower than advertised, try updating your network card drivers. Often, standard Windows drivers don't fully utilize the potential of gigabit ports, limiting the speed to 100 Mbps.
Why is the speed limited to 100 Mbps?
If your plan allows 500 Mbps, but tests show around 94-96 Mbps, your cable is likely damaged or has only 4 working wires instead of 8. Gigabit speeds require all 8 wires in a twisted pair cable to be intact. Check the connectors or replace the cable with a Cat5e/Cat6 cable.
Troubleshooting cable connections
Sometimes, even though the cable is connected and Wi-Fi is off, the internet still won't connect. In this case, the system may display "No internet access" or "Unidentified network." First, try resetting your network settings.
Open Command Prompt as Administrator (search for cmd (In the search box, right-click and select Run as administrator.) Run two commands in sequence to reset the DNS cache and TCP/IP stack settings:
ipconfig /flushdns
netsh int ip reset
After running the commands, be sure to restart your computer. The problem is often caused by static IP settings previously configured for another network. Ensure that the IPv4 protocol properties are set to obtain IP and DNS automatically.
⚠️ Note: Router and operating system interfaces are constantly being updated. The location of menu items may vary depending on your Windows version or router model. If you don't find the option described, search for a similar one or consult the manufacturer's documentation.
It's also worth checking whether your antivirus or firewall is blocking the new network connection. When you first connect, Windows asks you about the network type: select "Private" or "Home" to allow device discovery and access to local resources.
Advantages of a wired connection over a wireless one
Switching to cable offers significant advantages, especially in the crowded airwaves of apartment buildings. Wi-Fi signals are susceptible to interference from neighboring routers, microwave ovens, and even Bluetooth devices, causing micro-drops and ping spikes.
A wired connection provides stable throughput. If the router supports the standard Gigabit Ethernet, you'll get reliable speeds of up to 1 Gbps without any loss due to wall penetration. Furthermore, a cable connection is more secure: it's physically more difficult for an intruder to intercept data transmitted over the wire from outside the apartment.
For tasks that require constant transfer of large amounts of data (NAS backup, 4K video streaming, online gaming), cable is the unrivaled quality standard. Wireless technologies, even the new Wi-Fi 6 standard, still lack latency stability.
Does cable length affect internet speed?
Yes, but only if the length exceeds the standard 100 meters for twisted pair cable. In a typical apartment (up to 20-30 meters), signal quality remains consistent even with average-quality cables. The key is the integrity of the insulation and proper crimping of the connectors.
Can I use old telephone wire?
No, telephone wires (2 or 4 conductors) physically cannot provide speeds higher than 10-20 Mbps and are not suitable for modern Ethernet standards, which require 8 conductors. You need a twisted pair cable with RJ-45 connectors.
Do you need to buy an expensive gaming cable?
For home use, a high-quality Cat5e or Cat6 cable is sufficient. "Gaming" cables with gold-plated connectors and shielding are often a marketing gimmick and do not provide any speed increase in a typical apartment, where the cable length is short.
What to do if there is no LAN port on the PC?
If you have an Ultrabook without an Ethernet port, use a USB-to-LAN adapter. Choose models that support USB 3.0 and Gigabit Ethernet to avoid being limited by USB 2.0 speeds.
Will the speed decrease if I turn off Wi-Fi completely?
No, your speed won't decrease, but your stability will increase. Completely disabling the Wi-Fi module in Device Manager or using the button on your laptop ensures that the system won't waste resources scanning the airwaves.