Wireless connection speed directly depends on the communication protocol your equipment supports. Users often wonder why the 500 Mbps rate paid by their provider translates into a measly 50-70 Mbps in practice. The answer lies in Wi-Fi adapter, which may not physically support modern high-speed standards. If your laptop was released several years ago, it may be limited to an outdated protocol. 802.11n, which is simply not capable of passing more data, even if the router is capable of gigabit.
Understanding your device's current capabilities can help you avoid unnecessary expenses on router upgrades or, conversely, motivate you to buy a new USB adapter. Checking specifications is the first step in diagnosing internet issues. Below, we'll cover all available methods for determining the standard, from built-in system tools to professional software.
It's important to distinguish between frequency and standard. A frequency of 2.4 GHz or 5 GHz is a range, while 802.11ac or ax — is a data transmission technology. One cannot exist without the other, but it is the standard that determines the maximum theoretical channel throughput. Let's figure out how to find these parameters without installing unnecessary software.
Using the Windows Command Prompt
The fastest and most reliable way to obtain technical information about your network adapter is to use the built-in Windows console. This method doesn't require administrator rights and works on all versions of the operating system, starting with Windows 7. You don't need to search through hidden settings menus; just enter a single command.
Press the key combination Win + R, in the window that appears, enter cmd and press Enter. In the black window that opens, enter the command netsh wlan show interfacesThe system will provide a detailed report on the current connection. We're interested in the "Protocol" line.
This is where the currently active communication standard is displayed. If you see 802.11n, which means the connection is going according to the old standard, even if the router is distributing Wi-Fi 6This may be due to a large distance to the access point or interference in the air.
⚠️ Attention: The command line only displays the currently active standard. If the laptop is connected to a router operating in 2.4 GHz mode, it will display 802.11n, even if the adapter supports 5 GHz and 802.11ac. To check the maximum capabilities, see the next section.
Checking through Device Manager
To find out what exactly your adapter can do, and not just how it works right now, you need to look into device ManagerThis contains information about the chip model, allowing you to determine its maximum performance. This is especially useful if you're not currently connected to the internet.
Right-click the "Start" button and select "Device Manager." Expand the "Network adapters" branch. Look for a device whose name includes the words "Wireless," "Wi-Fi," or "802.11." This is usually Intel Dual Band, Realtek or Qualcomm Atheros.
Double-click the device to open its properties and go to the "Advanced" tab. In the list of parameters, you'll often find a line labeled "802.11n/ac/ax Mode" or "Wireless Mode." This value will tell you which standards the hardware supports.
- 📶 802.11b/g/n: An outdated adapter, maximum speed up to 150-300 Mbps, works only in the 2.4 GHz range.
- 🚀 802.11ac: Modern standard (Wi-Fi 5), mandatory support for 5 GHz, speeds up to 1 Gbps and higher.
- ⚡ 802.11ax: The latest standard (Wi-Fi 6) provides high connection density and low latency.
If the adapter's model name includes the word "Dual Band," that's a good sign. This means the device is theoretically capable of operating in both bands. However, without standard support ac or ax, in the 5 GHz range it will still be limited by the speed of the old protocol n.
Why is there an exclamation mark in Device Manager?
If a yellow triangle is illuminated next to the adapter, the driver is not working correctly or is missing. In this case, the driver standard cannot be verified—Windows sees the device as "Unknown." You should download the driver from the laptop manufacturer's website and install it on another device.
Analysis via third-party utilities
Windows' built-in tools sometimes provide too general information. For a more in-depth diagnosis, it's better to use specialized software. Programs like CPU-Z, AIDA64 or HWiNFO can tell you literally everything about your network adapter, including the driver version and supported IEEE standards.
Let's take a look at a free utility HWiNFOAfter launching, it will prompt you to select "Sensors-only" or "Summary" mode. For our purposes, simply launch the program and find the "Network" section. The exact chip model will be listed here.
Knowing the exact model, for example, Intel Wireless-AC 9260, you can easily find the specification online. The numbers and letters in the name often carry key information: "AC" directly indicates support 802.11ac, and the absence of this prefix (for example, just "Intel Wireless-N") indicates limitations.
| Standard (Marketing name) | Technical name | Year of adoption | Max. speed (theoret.) |
|---|---|---|---|
| Wi-Fi 4 | 802.11n | 2009 | 600 Mbps |
| Wi-Fi 5 | 802.11ac | 2014 | 6.9 Gbps |
| Wi-Fi 6 | 802.11ax | 2019 | 9.6 Gbps |
| Wi-Fi 6E | 802.11ax (6 GHz) | 2020 | 9.6 Gbps |
Using such programs can also help identify driver conflicts. If the utility doesn't detect the adapter or displays an error, the problem lies deeper than just Windows settings. In such cases, a complete driver reinstallation, removing the old software, can help.
Checking via PowerShell
For users who prefer more modern system management tools, PowerShell offers powerful commands for obtaining detailed information. This method allows you to output data in easy-to-read JSON or table formats.
Run PowerShell as administrator. Enter the command Get-NetAdapterto see a list of all network interfaces. Find the name of your Wi-Fi adapter (usually "Wi-Fi" or "Wireless Network").
To get information about the driver, use the command:
Get-NetAdapter | Select-Object Name, DriverVersion, InterfaceDescriptionThis command will display the driver version. Older driver versions may not support new speed standards, even if the hardware is capable of doing so. Update the driver via Device Manager or the manufacturer's website often solves the problem of low speed.
⚠️ Attention: Command-line interfaces may vary depending on your PowerShell version and system language. If a command doesn't work, check your spelling or use the English-language names of the cmdlet.
The influence of drivers on the connection standard
It often happens that the laptop is technically supported Wi-Fi 5, but it works at speeds Wi-Fi 4A driver could be the culprit. Windows 10 and 11 often automatically install "generic" Microsoft drivers, which provide basic functionality but don't unlock the device's full potential.
You can check if the driver is up to date in the same Device Manager On the "Driver" tab, compare the release date with the current one. If the driver is several years old, it's highly likely that it isn't optimized for new security and speed protocols.
The best way to update a driver is to download it from the laptop manufacturer's official website (HP, Lenovo, ASUS, Dell) or the chipset manufacturer's website (Intel, Realtek). Automatic driver downloads often make mistakes and suggest inappropriate software.
- 📥 Visit the support website for your laptop model.
- 🔍 Find the "Drivers" -> "Network" or "Wireless LAN" section.
- 💾 Download the latest version for your version of Windows.
- 🔄 Install and restart your computer.
After updating, please check again via command line. netsh wlan show interfacesIf the protocol line has changed to a more modern value (for example, from 11n to 11ac), then the problem has been resolved.
☑️ Driver Update Checklist
Frequently Asked Questions (FAQ)
Why does my laptop see the 5 GHz network but only connect to 2.4 GHz?
Your router is likely configured so that the 2.4 GHz and 5 GHz networks have the same name (SSID). Your laptop automatically selects the network with the best signal, and 2.4 GHz typically has a longer range. To force a connection to 5 GHz, separate the network names in your router settings or temporarily disable 2.4 GHz.
Can an external USB adapter work faster than the built-in one?
Yes, absolutely. If the built-in module is old (for example, it only supports 802.11n), purchasing a modern USB adapter with support 802.11ac or ax and an antenna will significantly increase the speed. The main thing is that the USB port is version 3.0 (blue), otherwise the speed will be limited by the port.
Does the operating system affect Wi-Fi 6 support?
Yes. For full Wi-Fi 6 (802.11ax) functionality, Windows 10 version 2004 or later, as well as Windows 11, are recommended. On older versions of Windows 10 or Windows 7, the adapter may operate in compatibility mode, without taking advantage of the new performance features.
How do I know if my router supports Wi-Fi 6?
Look at the sticker on the bottom of the router. It should say "Wi-Fi 6" or the "802.11ax" standard. This is also always indicated in the model name on the box. If the router is more than 5 years old, it most likely only supports Wi-Fi 5 (ac) or Wi-Fi 4 (n).