How to Switch to 5GHz Wi-Fi on Your Computer: A Complete Guide with Troubleshooting

Modern routers support two main Wi-Fi frequencies: 2.4 GHz And 5 GHzThe first provides a longer signal range, but suffers from congestion and interference, especially in apartment buildings. The second frequency offers 3-5 times higher data transfer speed It's less susceptible to external interference, but has a limited range. Switching to 5 GHz is especially important for gamers, streamers, and those working with large files—the difference in ping and download speeds is immediately noticeable.

However, not all computers automatically connect to the 5 GHz network, even if the router is broadcasting it. Problems can lie in both Windows/MacOS settings and hardware limitations of your Wi-Fi adapter. In this article, we'll look into the matter. all possible ways to transition to 5 GHz, including checking hardware compatibility, manually setting up the connection, and troubleshooting common errors. We'll pay special attention to cases where the 5 GHz network visible, but not connected - This is one of the most common problems that users face.

1. How to check if your computer supports 5GHz Wi-Fi

Before attempting to connect to a 5GHz network, make sure your Wi-Fi adapter is even capable of operating at this frequency. Many budget laptops and desktop PCs are equipped with adapters that only support 2.4 GHz—this is especially true for devices older than 2018.

To check compatibility on Windows 10/11:

  1. Click Win + R, enter devmgmt.msc and press Enter.
  2. IN Device Manager find the section Network adapters.
  3. Right-click on the name of your Wi-Fi adapter (usually contains the words Wireless, Wi-Fi or Network Adapter) and select Properties.
  4. Go to the tab Additionally and find the parameter Band or Wireless ModeIf the drop-down list contains options with 5GHz or 802.11a/n/ac/ax - your adapter supports the required frequency.

For MacOS:

  • 📋 Open About this Mac (click on the Apple logo in the top menu).
  • 🔍 Go to System Report → Network → Wi-Fi.
  • 📊 In the section Supported PHY modes look for mentions 802.11a, 802.11n (5 GHz) or 802.11ac/ax.
⚠️ Attention: If your adapter does not support 5 GHz, but your router broadcasts both networks, you can add an external USB adapter (For example, TP-Link Archer T4U or ASUS USB-AC56>). These devices start at 1,500 rubles, and their installation requires no special skills.
📊 What Wi-Fi adapter do you have?
Built into the laptop
External USB adapter
PCI-e card in a PC
Don't know
Another

2. Configuring the router to operate at 5 GHz

Even if your computer supports 5 GHz, your router may not be configured correctly. By default, many models (for example, TP-Link Archer C6, Keenetic Giga or ASUS RT-AX55) both networks broadcast under the same name (SSID), but with different frequencies. In some cases, the 5 GHz network may be disabled or hidden.

To check and change settings:

  1. Connect to the router via cable or 2.4 GHz Wi-Fi.
  2. Open your browser and enter the router's IP address (usually 192.168.0.1, 192.168.1.1 or 192.168.8.1). The default login and password are indicated on the device sticker.
  3. Find the section Wireless network (or Wi-Fi, Wireless).
  4. Make sure that the following are set for 5 GHz networks:
    • 🔄 Mode 802.11a/n/ac or 802.11ax (Wi-Fi 6).
    • 📶 Channel in range 36-48 or 149-165 (automatic selection will work too).
    • 🔒 Channel width not less than 40 MHz (optimally - 80 MHz for speed).
  • If the 5GHz network is disabled, enable it and give it a unique name (e.g. MyWiFi_5G) to distinguish it from 2.4 GHz.
    • Router parameter Recommended value for 5 GHz Explanation
    Wireless mode 802.11a/n/ac or 802.11ax Defines the supported standards. 802.11ac (Wi-Fi 5) and newer provide maximum speed.
    Channel 36, 40, 44, 48 or Auto Channels 149-165 may require additional DFS (Dynamic Frequency Selection) tuning.
    Channel width 80 MHz Narrow channels (20 MHz) limit the speed. Wide (> 80 MHz) may cause interference.
    Max. number of clients No less 10 If the value is too low, the router may block new connections.
    ⚠️ Attention: On some routers (for example, Zyxel Keenetic) The 5 GHz network may be disabled to save power. Check the section Power management or Energy saving.

    3. Manually connect to a 5 GHz network in Windows

    If your router is broadcasting at 5 GHz, but Windows stubbornly connects to 2.4 GHz, try force the desired network to be specifiedThis is relevant for cases where both networks have the same SSID (Name).

    Instructions for Windows 10/11:

    Open the list of available networks (click on the Wi-Fi icon in the tray) | Find a network labeled "5G" or create a new one with a unique name | Forget the old 2.4 GHz network in the settings | Connect to the 5 GHz network and check the "Connect automatically" box

    -->

    1. Click on the Wi-Fi icon in the lower right corner of the screen.
    2. If there are two networks with the same name in the list (for example, MyWiFi And MyWiFi_5G), select the one marked 5G.
    3. If there is no network marked as such, but you know that the router is broadcasting at 5 GHz:
      • 🔧 Open Settings → Network & Internet → Wi-Fi → Manage known networks.
      • 🗑️ Find your network in the list and click Forget.
      • 🔄 Reconnect - Windows should automatically select the optimal frequency.
  • If Windows connects to 2.4 GHz again, try disable automatic selection: 
    netsh wlan set autoconfig enabled=no interface="Your_adapter_name"

    After that, manually connect to the 5 GHz network.

    • For advanced users There's another way—editing the registry. This will help if Windows ignores adapter settings:

    Editing the registry to force 5 GHz

    1. Click Win + R, enter regedit and confirm.

    2. Follow the path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\mrvlpcie8897\Parameters (the path may differ depending on the adapter!).

    3. Create a new parameter DWORD (32-bit) with a name Band and meaning 1 (for 5 GHz).

    4. Restart your computer.

    ⚠️ Attention: Incorrectly editing the registry can cause system crashes. Create a restore point before making changes!

    4. Connection Features on MacOS

    On computers Apple (MacBook, iMac) Switching to 5 GHz usually happens automatically, but sometimes the system gets stuck on 2.4 GHz. This is especially true for older models (pre-2017) or when using public networks.

    To force a connection to 5 GHz on MacOS:

    • 🍎 Open System Preferences → Network → Wi-Fi → Advanced.
    • 📋 On the list Preferred networks delete your current network (click –).
    • 🔄 Reconnect - macOS should select the optimal frequency.
    • 🛠️ If the network is still running on 2.4 GHz, create new local profile:
      1. In the same menu Additionally click + at the bottom of the list of networks.
      2. Enter the name of your 5GHz network (e.g. MyWiFi_5G) and save.
      3. Connect to the newly created network.

    On MacBook Pro/Air with M1/M2 chip and newer ones usually don't have problems with 5 GHz - the adapters here support it Wi-Fi 6 (802.11ax) and automatically select the best frequency. However, if you notice that the speed drops when connected to 5 GHz, try set the channel manually on the router (for example, 44 or 157), as some channels may conflict with radars (DFS).

    5. Why the computer doesn't see 5 GHz Wi-Fi: troubleshooting

    If your computer doesn't detect the 5 GHz network, even though your router is broadcasting it, there may be a few possible causes:

    • 🔌 Hardware incompatibility - the adapter does not physically support 5 GHz (see Section 1).
    • 🔄 Disabled network on router - check the settings (see Section 2).
    • 📡 Weak signal — 5 GHz has poorer penetration through walls. Move your computer closer to the router.
    • 🛡️ The adapter driver is out of date. — especially relevant for Windows.
    • 🔒 The MAC address filter is enabled on the router. - your computer may be blacklisted.

      • For diagnostics in Windows:

      1. Open Command line (Win + R → cmd).
      2. Enter the command: 
        netsh wlan show drivers

        In the results, look for the line Supported radio types. If it's not there 802.11a or 5GHz — the adapter is not compatible.

      3. Check the list of available networks: 
        netsh wlan show networks mode=bssid

        If there are no networks marked in the list 5GHz, the problem is on the router or adapter side.

    For Linux (Ubuntu, Mint, etc.) run in the terminal:

    iwlist wlan0 frequency

    If there are no frequencies in the output 5180 MHz – 5825 MHz, your adapter does not support 5 GHz.

    6. Optimize speed and stability at 5 GHz

    Even after successfully connecting to 5GHz, you may still experience communication breakdowns or low speedThis is due to the specifics of the range: it's more sensitive to interference and distance. Here's how to improve connection quality:

    • 📶 Select a free channel - use apps like Wi-Fi Analyzer (Android) or NetSpot (Windows/Mac) to scan the air. Channels 36-48 are usually less busy.
    • 🔄 Update your router firmware - Outdated software may limit speed to 5 GHz.
    • 🛡️ Disable power saving for the adapter:
      1. IN Device Manager Find your Wi-Fi adapter.
      2. IN Properties → Power Management uncheck Allow the computer to turn off this device to save power.
  • 📡 Use directional antennas - If your router supports removable antennas, replace them with models with amplification (for example, TP-Link TL-ANT2408CL).
    • Problem Possible cause Solution
    The 5 GHz network keeps coming and going Automatic Channel Selection (DFS) Fix the channel manually (eg. 36 or 149)
    Low speed (less than 100 Mbps) Narrow channel width (20 MHz) Install 40 MHz or 80 MHz in the router settings
    Constant connection breaks Weak signal or interference Reduce the distance to the router or use a repeater
    Unable to connect (authentication error) Inconsistency in safety standards Install on the router WPA2-PSK or WPA3

    7. Alternative solutions: if nothing helps

    If your computer stubbornly refuses to run at 5 GHz, consider alternative options:

    • 🖥️ PCI-e adapter for PC - If you have a desktop computer, installing an internal Wi-Fi card (for example, TP-Link Archer TX3000E with support Wi-Fi 6) will solve the problem once and for all. Cost: from 2,500 rubles.
    • 🔌 Powerline adapters — If the router is far away and it is inconvenient to lay the cable, use adapters TP-Link AV1000 or Devolo MagicThey transmit the Internet through electrical wiring.
    • 📶 Mesh system - If you have a large house, consider Mesh routers (for example, Keenetic Air or ASUS ZenWiFi). They create a single network with automatic switching between 2.4 GHz and 5 GHz.
    • 🔄 USB adapter with external antenna - models like ASUS USB-AC68 provide a stable connection even at a distance of 10+ meters from the router.

    If you use laptop and don't want to spend money on a new adapter, try connect via cable (through USB-Ethernet adapter(if there's no built-in port). This will provide maximum speed and stability, especially for online gaming or video editing.

    ⚠️ Attention: Some USB adapters (especially cheap Chinese models) may lie 5 GHz support is listed in the specifications. Before purchasing, check reviews on sites like OpenNet or DNS — look for mentions of real tests at 5 GHz.

    FAQ: Frequently asked questions about upgrading to 5 GHz Wi-Fi

    My router supports 5 GHz, but it's not in the list of networks. What should I do?

    First, check if the 5 GHz network is enabled in the router settings (section Wireless network). If yes, but the computer doesn't see it:

    • Update your Wi-Fi adapter driver.
    • Try connecting from another device (smartphone, tablet) - if 5 GHz is visible there, the problem is with your PC.
    • Make sure that the router is not in the "Secure Mode" mode. 802.11b/g/n (it turns off 5GHz).
    How do I force Windows to always connect to 5GHz instead of 2.4GHz?

    If the router broadcasts both networks under the same name, Windows may choose 2.4 GHz due to its better signal. Solutions:

    • Rename the 5GHz network on your router (e.g. MyWiFi_5G).
    • IN Device Manager disable 2.4 GHz support for your adapter (parameter Band or Wireless Mode).
    • Use the command: 
      netsh wlan set autoconfig enabled=no

      After this, manually connect to the desired network.

    My MacBook isn't running at 5 GHz after updating macOS. What should I do?

    This is a known issue with some updates. Try:

    • Reset network settings: System Preferences → Network → Virtual Interface Management → Reset.
    • Delete the Wi-Fi configuration file: 
      sudo rm /Library/Preferences/SystemConfiguration/NetworkInterfaces.plist

      Then restart your MacBook.

    • Create a new access point on the router with a different name and password.
    Is it possible to use 2.4GHz and 5GHz on one device at the same time?

    No, a Wi-Fi adapter can only connect to one frequency at a time. However, you can:

    • Use two adapters (eg built-in for 2.4GHz and USB for 5GHz).
    • Tune priority connection to 5 GHz, but leave 2.4 GHz as a reserve.
    • Use Mesh system, which automatically switches devices between frequencies.
    How can I check what frequency I'm connected to right now?

    In Windows:

    • Open Settings → Network & Internet → Wi-Fi → Hardware Properties.
    • In the section Properties find the line Protocol - if specified 802.11ac or 802.11a, you are on 5 GHz.

    On MacOS:

    • Clamp Option (Alt) and click the Wi-Fi icon in the menu. The frequency will be displayed in the drop-down list.

      • In Linux:

      iwconfig wlan0 | grep Frequency

      Frequencies 2.412 GHz – 2.484 GHz correspond to 2.4 GHz, and 5.180 GHz – 5.825 GHz — 5 GHz.

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