How to connect a system unit to Wi-Fi wirelessly: all working methods

Connecting a system unit to the Internet wirelessly is a task faced by owners of desktop PCs that are not equipped with a built-in Wi-Fi moduleUnlike laptops or smartphones, most desktop computers are designed by default to be connected via a wired connection EthernetHowever, modern realities require flexibility: moving a router to another room, a lack of free ports, or simply a desire to get rid of excess cables forces us to look for alternatives.

In this article we will look at all current methods Connecting your PC wirelessly to Wi-Fi—from purchasing an external adapter to using your smartphone as a modem. We'll pay special attention to the nuances Windows 10/11, old motherboards, and cases where the router is too far away. You'll learn which method is the most reliable and which is suitable as a temporary solution.

1. Check for a built-in Wi-Fi module

Before purchasing additional equipment, make sure that your system unit no longer equipped with Wi-Fi. Many modern motherboards (especially of the form factor mATX or ITX) have a built-in module, but it may be disabled in the BIOS or simply not connected to the antennas.

How to check:

• 🔍 Go to device Manager (Win + X → Device Manager) and expand the tab Network adaptersLook for devices with names Wireless, Wi-Fi or 802.11.
• 📋 Check your motherboard specifications on the manufacturer's website (e.g. ASUS, Gigabyte, MSI). Models with index AC or AX (For example, ASUS Prime B550M-A Wi-Fi) usually have a built-in module.
• 🔧 If the module is present but not working, check the antenna connections (two small antennas on the back of the case) and enable it in the BIOS (Advanced → Onboard Devices → Wi-Fi → Enabled).

If you don't have a built-in module, don't worry. There are at least five alternative connection methods, and we'll cover each one.

2. External USB Wi-Fi adapter: a simple and universal solution

USB Wi-Fi adapter — the most popular solution for connecting a PC to a wireless network. It's a compact device that connects to any available USB port and adds Wi-Fi support. The price varies from 500 to 3000 rubles depending on the speed and standard (from Wi-Fi 4 to Wi-Fi 6E).

Advantages of the method:

• ⚡ Instant installation — just insert the adapter into the port, and Windows will automatically install the drivers (for most models).
• 🔄 Mobility — the adapter can be reconnected between devices (for example, a PC and a laptop).
• 📶 Support for modern standards — models with Wi-Fi 6 (802.11ax) provide speeds up to 2400 Mbps.

How to choose an adapter:

Connection instructions:

1. Insert the adapter into USB port (preferably USB 3.0 for high-speed models).
2. Wait for the drivers to be installed automatically (if Windows doesn't find them, download them from the manufacturer's website).
3. Click on the network icon in the tray → select your Wi-Fi network → enter the password.

Make sure your router supports the same frequency (2.4 or 5 GHz)

Check compatibility with your version of Windows

Pay attention to reviews about connection stability

Check the adapter's maximum speed against your plan's speed.

⚠️ Attention: Cheap chip-based adapters Realtek RTL8188 They often overheat and disconnect from the power supply. For stable operation, choose models with active cooling (heatsink) or chips. Intel/Broadcom.

3. PCIe Wi-Fi module: for maximum speed and stability

If you don't want to borrow USB port or need maximum speed (for example, for online gaming or 4K video streaming), consider installing PCIe Wi-Fi adapterThis is an internal board that is installed in a slot. PCIe x1 on the motherboard and connects to the antennas located on the rear panel of the case.

Advantages of PCIe modules:

• 🚀 High speed — to 6000 Mbps (for models with Wi-Fi 6E).
• 📡 The best signal thanks to external antennas (usually 2-4 antennas are included in the kit).
• 🔧 Low latency (ping) - critical for gamers.

Cons:

• 🔨 Requires disassembling the system unit and a free slot PCIe.
• 💰 The cost is higher than that of USB adapters (from 2000 rubles).

Popular models:

• 💻 ASUS PCE-AC88 — 4 antennas, Wi-Fi 5, speed up to 2100 Mbps.
• 💻 TP-Link Archer TXE75E — Wi-Fi 6E, speed up to 2400 Mbps.
• 💻 Gigabyte GC-WBAX200 — support for Bluetooth 5.2 + Wi-Fi 6.

Installation instructions:

1. Turn off your PC and disconnect the power cable.
2. Remove the side cover of the case and find an empty slot. PCIe x1.
3. Place the module into the slot and secure it with a screw.
4. Connect the antennas to the connectors on the rear panel.
5. Turn on your PC and install the drivers (usually included on a disk or downloaded from the manufacturer’s website).

What should I do if my PC doesn't see the network after installing a PCIe module?

1. Check if the antennas are connected correctly (usually the connectors are marked MAIN And AUX).

2. Update drivers via device Manager (right click on the adapter → Update driver).

3. Make sure the option is enabled in BIOS PCIe Wi-Fi Support (on some motherboards it is disabled by default).

4. Try moving the module to a different slot. PCIe (sometimes conflicts with the video card).

4. Connecting via smartphone (USB tethering or hotspot)

If you need temporary connection to the Internet (for example, to install drivers or download files), you can use your smartphone Android or iOSThere are two options:

1. USB tethering — the phone connects to the PC via a cable and distributes the Internet via USB.
2. Modem mode (access point) — the phone distributes Wi-Fi, and the PC connects to it like a regular router.

USB tethering more reliable, as it does not depend on the Wi-Fi signal strength, but requires a cable. Access point More convenient for laptops, but may slow down when the cellular network signal is weak.

Instructions for Android:

1. Connect your smartphone to your PC via USB cable.
2. On your phone, go to Settings → Network & Internet → Hotspot & Tethering.
3. Turn on USB modem.
4. On your PC, check your connection: a new network device should appear (for example, Remote NDIS).

Instructions for iPhone:

1. Connect iPhone to PC via Lightning/USB-C cable.
2. On the phone: Settings → Cellular → Personal Hotspot.
3. Turn on Allow others and select USB only.

⚠️ Attention: Mobile operators may block tethering or limit speeds. For example, MTS And Beeline On some plans, after 10 GB of traffic, the speed drops to 64 kbps. Check the terms in your personal account.

5. Powerline adapters: Wi-Fi via electrical wiring

If the router is in another room and you don’t want to run a cable, you can use Powerline adaptersThese devices transmit the internet signal over electrical wiring at home and then convert it to Wi-Fi or Ethernet.

How does this work:

1. One adapter connects to the router via Ethernet and is inserted into the socket.
2. The second adapter (with Wi-Fi support) is plugged into a socket next to the PC and distributes the Internet over the air.

Pros:

• 🏠 No need to lay cables.
• 🔌 More stable than Wi-Fi through walls.
• 📶 You can choose a model with a connector Ethernet (for PC) or Wi-Fi (for other devices).

Cons:

• ⚡ Speed ​​depends on the quality of the wiring (in older houses it can drop to 10–20 Mbps).
• 💰 The cost of a set of 2 adapters starts from 3,000 rubles.

Examples of models:

• 🔌 TP-Link TL-WPA8630P — speed up to 1300 Mbps, 2 Ethernet ports + Wi-Fi.
• 🔌 Zyxel PLA5456 - support Wi-Fi 6, speed up to 2400 Mbps.

Setup instructions:

1. Connect the first adapter to the router with a cable and plug it into a power outlet.
2. Plug the second adapter into a power outlet near the PC.
3. If the model has Wi-Fi, connect to its network (the name is indicated on the case).
4. If the model is with Ethernet - connect it to the PC with a cable.

⚠️ Attention: Powerline adapters are sensitive to network filters And UPSPlug them directly into a power outlet, otherwise the speed will drop by 5-10 times.

6. Alternative methods: from Mi-Fi routers to Mesh systems

If none of the above methods work, consider these options:

• 📶 4G/5G Mi-Fi router - a compact device (for example, Huawei E5577 or ZTE MF920V), which distributes internet via Wi-Fi via a SIM card. Suitable for a summer house or temporary use.
• 🔄 Mesh system - If the problem is a weak Wi-Fi signal, install additional access points (for example, TP-Link Deco or Google Nest Wi-Fi). They automatically switch devices between each other.
• 🖥️ Wi-Fi via the motherboard - some boards (for example, ASUS ROG Strix or MSI MEG) have a slot M.2 Key E to install the module Intel AX200 or AX210This is similar to PCIe, but does not occupy a slot.

For gaming PCs or workstations where connection stability is critical, the best choice is PCIe adapter or PowerlineSuitable for temporary connection. USB adapter or tethering from a smartphone.

FAQ: Frequently asked questions about connecting a PC to Wi-Fi

My PC can't see Wi-Fi networks after installing the adapter. What should I do?

Check the following:

1. Are the drivers installed (go to device Manager → Network adapters).
2. Is the adapter included in Network parameters (Win + I → Network and Internet → Wi-Fi).
3. Does the adapter support your router's frequency (2.4 or 5 GHz)?
4. Are there any conflicts with your antivirus (temporarily disable it).

If it doesn't help, try connecting the adapter to another one. USB port or update the drivers manually from the manufacturer's website.

Which adapter should I choose for online gaming?

Critical for games low ping And stable connectionOptimal options:

• PCIe adapter with support Wi-Fi 6 (For example, ASUS PCE-AX58BT) - minimal delays.
• USB adapter on a chip Intel AX200 (For example, TP-Link Archer TX3000E) - if there is no free PCIe slot.

Avoid adapters based on Realtek RTL88xx - They often lag in games.

Is it possible to connect a PC to Wi-Fi without an adapter?

Yes, but only through external devices:

• Smartphone in modem mode (USB tethering or access point).
• Another PC/laptop with Wi-Fi, connected to your system unit via Ethernet (setting Internet access sharing in Windows).
• TV set-top box (for example, Xiaomi Mi Box) with support Ethernet and Wi-Fi configured as a bridge.

It is impossible to connect without additional equipment—the system unit needs a physical module to receive Wi-Fi.

Why is Wi-Fi speed slower than cable?

This is normal - a wireless connection is always slower than a wired connection due to:

• Interference from other devices (microwaves, neighboring networks).
• Limitations of the standard (for example, Wi-Fi 4 maximum 300 Mbps vs 1 Gbps via Ethernet).
• Distances to the router (the further, the weaker the signal).
• Router settings (channel, channel width, 802.11n/ac/ax mode).

To improve speed:

• Switch to frequency 5 GHz (less busy).
• Install an adapter with support Wi-Fi 6.
• Change the channel in the router settings (use NetSpot or Wi-Fi Analyzer for ether analysis).

How to connect an old PC (Windows XP/7) to Wi-Fi?

For legacy systems:

1. Buy USB Wi-Fi adapter with support of your OS (for example, TP-Link TL-WN722N for Windows XP).
2. Download drivers for your version of Windows from the adapter manufacturer's website.
3. If there are no drivers, use NDIS wrappers (For example, Zydas ZD1211 for old chips).
4. For Windows XP, you may need Service Pack 3.

An alternative is to connect via second PC (with modern OS) Ethernet with Wi-Fi distribution.