TP-Link Deco S4 User manual

Deco S4
Fast, Stable, Everywhere
User Guide
AC1900 Whole Home Mesh Wi-Fi System
1910013408 REV3.6.0 ©2023 TP-Link

Contents
About This Guide ····················································································································1
Appearance ·······························································································································2
Set Up Your Deco ···················································································································3
Troubleshooting ······················································································································7
Authentication··························································································································8

1
About This Guide
This guide provides a brief introduction to AC1900 Whole Home Mesh Wi-Fi System and regulatory information.
Features available in Deco may vary by model and software version. Deco availability may also vary by region or ISP. All images, steps, and descriptions
in this guide are only examples and may not reect your actual Deco experience.
Conventions
In this guide, the following conventions are used:
Convention Description
Deco Stands for Deco Whole Home Mesh Wi-Fi System/
Unit.
Underline Hyperlinks are in teal and underlined. You can click to
redirect to a website or a specic section.
Teal
Key information appears in teal, including
management page text such as menus, items,
buttons and so on.
Note: Ignoring this type of note might result in a malfunction
or damage to the device.
Tips: Indicates important information that helps you make
better use of your device.
More Info
• Specic product information can be found on the product page at
https://www.tp-link.com.
• A Technical Community is provided for you to discuss our products
at https://community.tp-link.com.
• Our Technical Support contact information can be found at the
Help center of the Deco app and the Contact Technical Support
page at https://www.tp-link.com/support.
Speed/Coverage/Device Quantity Disclaimer
Maximum wireless signal rates are the physical rates derived from IEEE
Standard 802.11 specications. Actual wireless data throughput and
wireless coverage, and quantity of connected devices are not guaranteed
and will vary as a result of network conditions, client limitations, and
environmental factors, including building materials, obstacles, volume and
density of trac, and client location.
MU-MIMO Disclaimer
Use of MU-MIMO requires clients to also support MU-MIMO.
Seamless Roaming Disclaimer
Clients need to support 802.11k/v/r and may require additional set up.
Performance may vary depending on the client device.

2
Appearance
Each Deco has an LED that changes color according to its status, three RJ-45 Ethernet ports, a power slot, and a Reset button. See the explanation
below:
Tip: The product label can be found at the bottom of the product.
Pluse Yellow:
Deco is resetting.
Solid Yellow:
Deco is starting up.
Pluse Blue:
Deco is ready for setup,
or WPS in progress.
Solid Blue:
Deco is setting up.
Pluse White:
Deco is upgrading rmware.
Solid White:
Deco is all set up and connected.
Pluse Red:
Deco is disconnected from main Deco.
Solid Red:
Deco has an issue.
Ethernet Ports:
For connecting Deco to your modem, the
Ethernet outlet, or to other internet devices.
Reset Button:
Press for 1 second and release to reset Deco
to factory default settings. The light changing
from pulsing yellow to solid yellow indicates a
successful reset.
Power Slot:
For connecting Deco to the power socket via
the provided power adapter.

3
Set Up Your Deco
First let's start by setting up the Deco network. Get the TP-Link Deco app for iOS or Android, then follow the app to walk through the setup.
1. Get the Deco app
Scan the QR code below or go to Google
Play or the App Store to download the Deco
app. Install the app on your Android or iOS
smartphone or tablet.
or
2. Log in or sign up with TP-Link ID
Open the app and log in with your TP-Link ID. If
you don’t have a TP-Link ID, create one rst.
Note: If you forgot your login password, tap Forgot Password?.
The app will help you reset your password.
3. Select your Deco model
Search for and select your Deco model. If
you have more than one Deco model, tap the
question below the search box to check how
to maximize the overall network.

4
4. Plug in your Deco
Power o your modem. Connect your Deco to
the modem and power them both on.
If you don't have a modem, connect your
Deco directly to the Ethernet outlet.
5. Wait until Deco's LED pulses blue
Wait until Deco's LED pulses blue, then
connect your phone/tablet to the Deco's Wi-Fi
using the default SSID printed on the product
label.
6. Specify your Deco's location
Select or custom a location for your Deco.
The location will be used as the name of your
Deco.

5
9. Connect to your Wi-Fi network
Connect your phone/tablet to the Deco's Wi-Fi.
8. Create your Wi-Fi network
Set a network name and a password. These
will be the name and password you use to
connect your devices to Wi-Fi.
7. Connect your Deco to the internet
Select the internet connection type and enter
the information. If you are not sure, contact
your internet service provider.

6
10. Setup complete
Your Deco network is now up. You can connect
your devices to the Deco network. You can also
plug in the other included Decos, and they will
automatically join the network within 2 minutes.

7
Troubleshooting
Solutions to common problems during setup or use are provided here for reference. Follow the steps and the provided link below to diagnose and solve
problems you might experience with your Deco.
If problems still exist, contact us: https://www.tp-link.com/support
Q1. What should I do if I fail to congure the main Deco and get stuck on “We couldn't nd Deco”?
Refer to the guide https://www.tp-link.com/support/faq/2239/ or follow the video https://youtu.be/2HYuEYS9XJM
Q2. What should I do if I fail to congure the satellite Deco and get stuck on “We couldn't nd another Deco”?
Refer to the guide https://www.tp-link.com/support/faq/1447/ or follow the video https://youtu.be/iVgDzoo16T4
Q3. What should I do if I fail to congure the main Deco and get stuck on “Testing Internet Connection”?
Refer to the guide https://www.tp-link.com/support/faq/2239/
Refer to the video https://youtu.be/OSUrGdWH-i0
Q4. What should I do if my wireless devices cannot connect to Deco?
Refer to the guide https://www.tp-link.com/support/faq/2718/
Q5. What should I do if Deco suddenly lost internet access?
Refer to the guide https://www.tp-link.com/support/faq/2428/
Q6. How can I nd a suitable spot for my Deco?
Refer to the guide https://www.tp-link.com//support/faq/1446/
Q7. What can I do if the Deco app isn't working properly?
Refer to the guide https://www.tp-link.com/support/faq/1456/

8
Authentication
FCC Compliance Information Statement
Product Name: AC1900 Whole Home Mesh Wi-Fi System
Model Number: Deco S4
Component Name Model
I.T.E Power Supply T120150-2B1
Responsible party:
TP-Link USA Corporation
Address: 10 Mauchly, Irvine, CA 92618
Website: http://www.tp-link.com/us/
Tel: [phone]
Fax: [phone]
E-mail: [email protected]om
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio
or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.