How to properly upgrade your Ethernet connection to Wi-Fi without losing speed

Switching from wired internet (Ethernet) to a wireless connection (Wi-Fi) may seem like a simple task, but in practice, users face a number of nuances: from choosing the right equipment to the intricacies of security settings. In 2026, when Wi-Fi 6E speeds become the standard and providers are rapidly abandoning legacy technologies, a smart upgrade from a wired network to a wireless one requires taking these new realities into account. This article will help you avoid common mistakes, from speed drops after the upgrade to device compatibility issues.

Many people mistakenly believe that simply unplugging the cable and connecting to the network over the air is enough. However, without prior preparation, you risk an unstable connection, especially when it comes to Smart TV, gaming consoles, or workstations where minimal latency is crucial. We'll cover every step, from checking your current infrastructure to optimizing your router settings for maximum performance.

We'll pay special attention to devices that aren't natively equipped with Wi-Fi (desktop PCs, some printer models, older TVs). These devices will require additional adapters, and it's important to choose wisely—not every USB dongle can handle modern standards. 802.11ax or supports WPA3.

If you're planning to replace Ethernet with Wi-Fi in an office or large home, keep in mind that a wireless network requires a different approach to coverage planning. A mesh system or additional access points may be required—we'll discuss this below.

1. Preparation: What to check before disconnecting the cable

Before physically disconnecting the Ethernet cable, perform a few critical checks. This will help avoid a situation where, after switching to Wi-Fi, some devices are left without internet access and speeds drop by 5-10 times.

Firstly, assess the current load on your networkConnect to the router via cable and check:

• 📊 Download/upload speed via Speedtest (Run the test 3 times and record the average)
• 📶 Wi-Fi signal strength at the point where the main device will be (use the app Wi-Fi Analyzer for Android or NetSpot (for macOS/Windows)
• 🔄 The number of connected devices in the router's web interface (section DHCP Clients or Connected Devices)

Secondly, make sure your router supports modern standards. If you have a model older than 2018, there's a high risk that it only works with 802.11n (maximum 300 Mbps) or can't WPA3For comparison: even budget routers from 2026-2026 support Wi-Fi 6 (up to 1.2 Gbps) and have a separate radio module for the 6 GHz range.

⚠️ Note: If your provider's plan provides speeds above 500 Mbps, but your router is older than 3 years, upgrading from Ethernet to Wi-Fi will artificially limit your bandwidth. In this case, upgrade your router first.

The third key point is checking device compatibility. For example:

• 🖥️ Desktop PCs often don't have built-in Wi-Fi - you'll need one PCIe adapter (for fixed installation) or USB-dongle (for temporary use)
• 🖨️ Printers with support only Ethernet or USB won't be able to print over Wi-Fi without an additional module
• 📺 Televisions Samsung series J (2016-2017) and LG without WebOS 4.0+ may not support WPA3

2. Choosing equipment: which Wi-Fi adapter or router to buy

If your device doesn't have built-in Wi-Fi, you'll need an external adapter. These fall into three categories:

For most home tasks (watching 4K videos, working with documents, online gaming) the optimal choice would be USB 3.0 adapter with 802.11ac support or PCIe module for a desktop PCIf your plan is over 1 Gbps or you use a VR headset, take a closer look at solutions based on Wi-Fi 6E (6 GHz).

When choosing a router, consider the following parameters:

• 🔗 WAN port: must be 1 Gbps (or 2.5 Gbps for tariffs over 500 Mbit/s)
• 📡 Wi-Fi standard: minimum 802.11ac (Wave 2), perfect - 802.11ax (Wi-Fi 6)
• 🔒 Security: support WPA3 and guest network
• 📶 Range: presence of external antennas (3-4 pcs.) or support Mesh

⚠️ Attention: Cheap routers with gigabit ports often have a hardware limitation on Wi-Fi speed of 300-400 Mbps. Check real-world tests of the model on YouTube or 4PDA before purchasing.

If you live in an apartment building, consider routers that support 160 MHz channels And MU-MIMOThese technologies help reduce interference from neighbors. Among the tested 2026 models:

• 🏆 Premium: ASUS RT-AX88U Pro (Wi-Fi 6, 6000 Mbps, 8 ports)
• 💰 Optimal: TP-Link Archer AX73 (Wi-Fi 6, 5400 Mbps, Mesh)
• 💵 Budget: Xiaomi Router AX3000 (Wi-Fi 6, 3000 Mbps)

3. Step-by-step instructions: how to connect to Wi-Fi instead of Ethernet

The replacement process depends on the device type. Below are general instructions that will work for most cases. If your device doesn't have built-in Wi-Fi (e.g., a desktop PC), first install the adapter according to the manufacturer's instructions.

Step 1: Obtaining connection data

You will need:

• 🔑 Network name (SSID) — usually indicated on the router sticker
• 🔐 Wi-Fi password (If you haven't changed it, look there)
• 📜 Security type (WPA2-PSK or WPA3-PSK)

If you don't know this information, connect to the router via cable and go to the web interface (usually at 192.168.1.1 or 192.168.0.1). Login and password for entry - admin/admin or indicated on the sticker.

Step 2: Setting up the device

For Windows 10/11:

1. Click Win + I → Network and Internet → Wi-Fi
2. Turn on your wireless network and select your access point from the list.
3. Enter your password and click Connect

For Smart TV (Samsung/LG/Sony):

1. Go to Settings → Network → Wireless connection
2. Select your network and enter the password (use the virtual keyboard on the remote)
3. Confirm the connection and wait until you receive an IP address.

For Wi-Fi-enabled printers:

1. Click the button Wi-Fi or WPS on the printer panel
2. Select mode Setup or WPS Push Button
3. Click the button WPS on the router within 2 minutes

Make sure Wi-Fi is working properly on the test device.

Write down the network name and password

Check your Wi-Fi speed (it should be at least 70% of the cable speed)

Save a backup copy of your router settings (if there are important rules)

Disconnect the Ethernet cable only after all devices are successfully connected-->

Step 3. Optimizing the connection

After connecting for the first time, please follow these steps to improve stability:

• 🔄 Restart your router (turn it off for 30 seconds)
• 📱 Update your router firmware via the web interface (section Administration → Firmware Upgrade)
• 🖥️ For PC: Install the latest drivers for your Wi-Fi adapter from the manufacturer's website
• 📊 Check your speed again - if it has dropped by more than 30%, try changing the Wi-Fi channel in your router settings

4. Typical problems and their solutions

Even with proper setup, issues can still arise after replacing Ethernet with Wi-Fi. Here are the most common ones and how to resolve them:

Problem 1: Slow speed compared to cable

Reasons and solutions:

• 📶 Weak signal: Move the router closer to the device or use repeater (For example, TP-Link RE605X). Check the signal level in dBm:
  • ✅ Good: from -30 to -60 dBm
  • ⚠️ Average: -60 to -70 dBm
  • ❌ Bad: below -70 dBm
• 🔧 Suboptimal router settings: In the router's web interface:

  Wireless Mode → Channel: Set to a fixed value (e.g. 36 for 5GHz)
  Wireless mode → Channel width: 80 MHz (for 5 GHz) or 20/40 MHz (for 2.4 GHz)
  QOS → Enable traffic prioritization for your device

• 🖥️ Adapter LimitationsUSB 2.0 adapters are physically incapable of transferring more than 300 Mbps. Replace them with PCIe or USB 3.0.

Problem 2: Constant connection drops

Most often this is associated with:

• 🔄 Channel overload: Use the app Wi-Fi Analyzerto find the least crowded channel. In urban areas, 2.4 GHz is almost always congested—switch to 5 GHz.
• 🔋 Energy saving: In Windows, disable the option:

  Control Panel → Power Options → Change plan settings → Change advanced settings → Wireless adapter settings → Power saving mode: Maximum performance

• 📡 Interference from other devicesMicrowaves, wireless mice, and Bluetooth speakers operate on the 2.4 GHz frequency. Try disabling them or switching to 5 GHz.

Problem 3: The device does not connect to Wi-Fi

Diagnostic algorithm:

1. Check if Wi-Fi is enabled on your device (sometimes it can be disabled by a hardware button).
2. Make sure you enter your password correctly (case sensitive!).
3. Reboot your router and device.
4. If used WPA3, try switching temporarily to WPA2 (some older devices do not support the new standard).
5. Reset network settings on your device:
   • 🖥️ Windows: Settings → Network & Internet → Status → Network reset
   • 📱 Android: Settings → System → Reset → Reset Wi-Fi, mobile network, and Bluetooth settings

5. Optimize Wi-Fi for maximum performance

To ensure your wireless network performs as well as a wired one, adjust the following settings. These are especially important for gamers, streamers, and those working with large files.

1. Choosing the right channel and width

In urban areas, most routers use channels 1, 6, or 11 in the 2.4 GHz band, which creates interference. Optimal settings:

• 📶 2.4 GHz:
  • Channel: 1, 6 or 11 (do not overlap)
  • Width: 20 MHz (40 MHz will increase interference)
• 📡 5 GHz:
  • Channel: 36, 40, 44, 48 (DFC channels 50-144 may require manual tuning)
  • Width: 80 MHz (if devices support it)

2. Setting up QoS (Quality of Service)

QoS allows you to prioritize traffic for important devices (for example, a work PC or a gaming console). In routers ASUS this is called Adaptive QoS, V TP-Link — Bandwidth ControlExample of a gaming setup:

1. Go to Adaptive QoS → Game
2. Select mode Game or Media Streaming
3. Add your PC/console's MAC address to the priority devices
4. Set a limit for other devices (e.g. 50% of the total speed)

3. Updating firmware and drivers

More than 60% of Wi-Fi problems in 2026 are related to outdated software - this is especially true for ISP routers (for example, Rostelecom or MTS), which often block manual updates. To update the firmware:

1. Download the latest version from the manufacturer's official website (for example, for Keenetic - With keenetic.com).
2. Go to the router's web interface → System or Administration → Firmware update.
3. Download the file and wait for it to complete (do not turn off the power!).
4. After updating, please perform a factory reset (Reset) and configure the router again.

For adapters, update drivers via device Manager (Windows) or Software Update (macOS). For Linux, manual compilation may be required:

sudo apt update
sudo apt install firmware-ralink # for adapters on the Ralink chip
sudo modprobe mt76 # for MediaTek adapters

6. Security: How to Secure Wi-Fi After Disabling Ethernet

Wireless networks are more vulnerable than wired ones—they can be hacked even without physical access to the router. The following security measures are essential:

1. Change factory login data

By default, many routers use:

• Login: admin
• Password: admin or 1234

Change them to complex combinations in the section Administration → ManagementAn example of a strong password: k7#pL9!vR2@qZ5*.

2. Setting up encryption

Use only WPA3-PSK (or WPA2-PSK(if your devices don't support the new standard). Disable legacy protocols:

• 🚫 WEP (hacked in minutes)
• 🚫 WPA (vulnerable to dictionary attacks)
• ✅ WPA3 (brute force protection)

3. Network Hiding (SSID Hiding)

Disable network name broadcasting in your router settings (Wireless → Basic Settings → Hide SSID). This won't make the network completely invisible to experienced hackers, but it will protect against accidental connections.

4. Guest network

If you have frequent guests, create a separate network with limited rights:

1. Go to Guest Network (or Guest network)
2. Enable guest access and set a separate password
3. Limit the speed (e.g. 50 Mbps)
4. Disable local network access (AP Isolation)

5. Control of connected devices

Regularly check the list of connected devices in the section DHCP Clients or Connected DevicesIf you find an unfamiliar device:

1. Change your Wi-Fi password
2. Enable MAC address filtering (although this is not a panacea)
3. Check your router for malware (for example, through F-Secure Router Checker)

⚠️ Important: If you are using public Wi-Fi (for example, in a cafe or hotel), never connect to it without a VPN. For a home network, it is also recommended to set up a VPN server on your router (for example, via OpenVPN or WireGuard).

7. Alternative Solutions: When Wi-Fi Isn't Enough

In some cases, completely eliminating Ethernet isn't practical. Consider hybrid options:

1. Powerline adapters (PLC)

If Wi-Fi is unstable due to thick walls or long distances, but laying a cable is not possible, use adapters PowerlineThey transmit the internet signal through electrical wiring. The speed depends on the quality of the wiring:

• 🏠 In new homes: up to 1000 Mbps (TP-Link AV1000)
• 🏢 In old houses: 200-500 Mbps (Devolo Magic 2 Wi-Fi)

2. MoCA adapters

Technology MoCA 2.5 Allows you to transmit internet via coaxial cable (from the antenna). Speeds up to 2.5 Gbps, but require special adapters (for example, goCoax MoCA 2.5).

3. Mesh systems

If you have a large house (150+ m²), a regular router won't provide stable coverage. Mesh systems (for example, Google Nest Wi-Fi or TP-Link Deco X60) automatically switch devices between access points without interruptions.

4. 4G/5G routers

If wired internet is unavailable or unreliable, consider a 5G-enabled mobile router (such as Huawei 5G CPE Pro 2). Speed ​​up to 2 Gbps, but depends on the operator's coverage.

FAQ: Frequently asked questions about replacing Ethernet with Wi-Fi

netsh int ip reset
netsh winsock reset