How to set up Wi-Fi on a computer: from choosing an adapter to a stable connection

⚠️ Attention: If your PC was built before 2015, check for an available slot. PCIe x1 or USB 3.0Older motherboards may not support modern adapters.

3. Installing a physical adapter

The process depends on the device type. Let's look at each option.

USB adapter

The easiest way:

1. Connect the adapter to a free USB port (preferably USB 3.0 for high speed).
2. Wait for the drivers to be installed automatically (in Windows 10/11 they are usually installed through Update Center).
3. If the driver is not installed, download it from the manufacturer's website (more on this in the next section).

PCIe adapter

You will need to disassemble the system unit:

Turn off your PC and unplug the power cable|

Remove the side cover of the case|

Find an available PCIe x1 slot (usually black or white)|

Touch the metal part of the case to remove static electricity-->

1. Insert the adapter into the slot PCIe x1 until it clicks.
2. Secure it to the rear panel of the case with a screw.
3. Connect the antennas (if included) to the connectors on the adapter.
4. Close the case and turn on the PC.

M.2 adapter (for laptops)

The most difficult part, but even a beginner can handle it:

1. Turn off the laptop, remove the battery (if possible).
2. Unscrew the bottom cover (usually held on by 5-10 screws).
3. Find a slot M.2 Key A/E (can be signed as WLAN).
4. Insert the module at an angle of 30° and secure with a screw.
5. Connect the antennas (usually black and white wires).

After installation, turn on your laptop and check if the new device is detected in Task Manager.

4. Installing and updating drivers

Without the correct drivers, the adapter will not work. Let's look at the process for Windows And Linux.

Windows 10/11

If the adapter is not detected automatically:

1. Open device Manager (devmgmt.msc).
2. Find the adapter in the section Network adapters or Other devices (if displayed as unknown).
3. Right click → Update driver → Automatic search.

If automatic search does not help:

1. Download the driver from the adapter manufacturer's website (for example, TP-Link, ASUS).
2. Select your adapter model and OS version.
3. Install the driver manually via device Manager (right click → Update driver → Search for drivers on this computer).

Linux (Ubuntu/Debian)

Most distributions install drivers automatically. If not:

sudo apt update
sudo apt install firmware-realtek # for Realtek adapters
sudo apt install firmware-iwlwifi # for Intel adapters

For adapters TP-Link Manual installation may be required:

git clone https://github.com/aircrack-ng/rtl8812au
cd rtl8812au
make
sudo make install

⚠️ Attention: IN Linux some adapters (for example, on a chip Realtek RTL8188EU) require kernel version 5.4+. Check your version with the command uname -rIf the kernel is outdated, update the system.

5. Setting up a Wi-Fi connection

After installing the drivers, all that's left to do is connect to the network. The process is almost the same for all versions of Windows and Linux.

Windows 10/11

1. Click on the network icon in the lower right corner (next to the clock).
2. Select the desired network from the list and click Connect.
3. Enter the password (if the network is secured).
4. Please mark if necessary Connect automatically.

If the network is not listed:

• 🔍 Make sure the adapter is turned on (in Device Manager (no exclamation marks).
• 📡 Check that the router is distributing Wi-Fi (indicator WLAN should burn).
• 🔄 Reboot your router (unplug it for 30 seconds).

Linux (Ubuntu)

1. Click on the network icon in the upper right corner.
2. Select a network and enter the password.
3. If there is no network icon, install it Network Manager:

sudo apt install network-manager

To configure via terminal:

sudo nmcli dev wifi list # Show available networks
sudo nmcli dev wifi connect "NetworkName" password "password"

6. Solving typical problems

Even after proper installation, errors may still occur. Let's look at the most common ones.

🔴 No networks available

• 🔌 Check if the adapter is connected (for USB, try a different port).
• 🔄 Restart your router and computer.
• 🛠️ Update the adapter driver (see section 4).
• 📡 Make sure your router isn't hiding your SSID (network name). If it is, connect manually via Settings → Networks → Wi-Fi → Hidden network.

🔴 There is a connection, but no internet

• 🌐 Check if the internet works on other devices.
• 🔧 Run network diagnostics in Windows: right-click on the network icon → Troubleshooting.
• 📝 Check your IP settings: Control Panel → Network Connections Select your adapter → Properties → Internet Protocol Version 4 (TCP/IPv4)Make sure the boxes are checked. Obtain an IP address automatically And Obtain DNS server address automatically.

🔴 Slow speed or connection drops

• 📶 Change the Wi-Fi channel in the router settings (for example, from Auto on 6 or 11 For 2.4 GHz).
• 🔄 Update your router's firmware (instructions are usually on the device's sticker).
• 🚫 Turn off power saving for the adapter: in Device Manager → Adapter Properties → Power Management → uncheck the box Allow the computer to turn off this device to save power.

7. Alternative ways to connect to Wi-Fi

If installing an adapter is not possible (for example, there are no available ports or slots), consider these options:

• 📱 Sharing Internet from a phone: turn on Access point in your smartphone settings and connect to it from your PC. The downside is limited data and rapid battery drain.
• 🖧 Powerline adapters: They transmit internet through electrical wiring. You connect one adapter to the router and the other to your PC (via Ethernet). Speeds up to 1 Gbps, but depend on the quality of the wiring.
• 🔗 Ethernet over USB: If you have a cable from your router but no Ethernet port on your laptop, buy one. USB-to-Ethernet adapter (For example, TP-Link UE300).

If your computer does not support Wi-Fi 6 (802.11ax), but your router distributes the network using this standard, the adapter will connect using an older protocol (for example, 802.11ac), but the speed will be limited by its capabilities.

8. Optimizing Wi-Fi connection

To ensure a stable connection, follow these tips:

• 📍 Router location: place it in the center of the apartment, raise it to a height of 1–1.5 m, avoid walls and metal objects.
• 🔄 Updating the router firmware: go to the control panel (usually at the address 192.168.0.1 or 192.168.1.1) and check for updates.
• 🛡️ Network protection: use encryption WPA3 (or WPA2, If WPA3 not supported). Avoid WEP - It's easy to hack.
• 📡 Channel selection: use programs like Wi-Fi Analyzer (Android) or inSSIDer (PC) to find the least congested channel.

For gamers and streamers:

• 🎮 Connect to your router via cable (if possible) or use 5 GHz for lower delays.
• 🔧 In the adapter settings (Device Manager → Properties → Advanced) enable the option Roaming Aggressiveness on Lowest for a stable connection.

⚠️ Attention: If you use VPN or proxy, this may reduce Wi-Fi speed. Disable them to check your actual connection speed.

FAQ: Frequently Asked Questions