Skip to content

This guide isn’t available in Polski yet, so we’re showing the original English version.

How to Connect Older Devices to Dual-Band Wi-Fi

Many older and smart-home devices only support 2.4 GHz Wi-Fi and WPA2. If they can’t see or join your network, give the 2.4 GHz band its own name, set security to WPA2/WPA3 mixed mode, and use channels 1–11.

Updated
Time
15 minutes
Difficulty
Medium
Applies to
Web

By Published Oct 6, 2026

Quick answer

  1. 1 Check the device supports 2.4 GHz only (most smart plugs, older printers and laptops).
  2. 2 In your router, split the bands: give 2.4 GHz its own Wi-Fi name.
  3. 3 Set security to WPA2/WPA3 (transition) or WPA2-Personal, not WPA3-only.
  4. 4 Use 2.4 GHz channel 1, 6 or 11 and 20 MHz width.
  5. 5 Connect the device to the 2.4 GHz network.
On this page
  1. Before you start
  2. Split the bands
  3. Make security compatible
  4. Use compatible radio settings
  5. Troubleshooting
  6. Frequently asked questions

Before you start

  • Access to your router settings

Method 1 Split the bands

Mesh systems often can’t split names; some offer an IoT network or temporarily disabling 5 GHz during setup.

  1. Step 1: Open wireless settings

    Log in to your router and open Wireless settings.

  2. Step 2: Turn off band steering

    Disable Smart Connect/Band Steering so 2.4 GHz and 5 GHz can have separate names.

  3. Step 3: Name 2.4 GHz

    Give 2.4 GHz a name like “Home-2.4” and save.

Method 2 Make security compatible

  1. Step 1: Use transition mode

    Set security to WPA2/WPA3-Personal (mixed). WPA3-only blocks older devices.

  2. Step 2: Avoid special characters

    Some older devices struggle with unusual characters or long passwords. Use letters and numbers if needed.

Method 3 Use compatible radio settings

  1. Step 1: Mode

    Set 2.4 GHz mode to 802.11b/g/n/ax mixed.

  2. Step 2: Channel

    Use channel 1, 6 or 11 (some devices from other regions can’t use 12–13) and 20 MHz width.

  3. Step 3: Connect the device

    Join “Home-2.4” on the device.

Troubleshooting

Device sees the network but won’t connect

Check the password, WPA2 compatibility and that MAC filtering isn’t blocking it.

Very old device (WEP only)

WEP is insecure and not supported by modern routers. Replace the device or use a wired connection.

Frequently asked questions

Will splitting bands slow down my other devices?

No. Modern devices can stay on 5 GHz; you just choose the network manually.

Why do smart devices use 2.4 GHz?

It reaches further through walls and the chips are cheaper and use less power.

Summary

Give 2.4 GHz its own name, use WPA2/WPA3 mixed security and channels 1, 6 or 11, and connect older or smart devices to that network.

Sources

Written by

James Chambo

Founder

James is the Founder and Senior Editor of OnlineHow with more than 20 years of experience in internet publishing.