Powering Multiple WAPs from Grandstream GWN7002 and GWN7003 Routers

Introduction

Grandstream’s GWN7002 and GWN7003 routers both include PoE-capable LAN ports. However, the factory‑supplied power adapter does not provide enough wattage to reliably power more than one PoE device, such as Grandstream GWN access points (WAPs). This guide explains the limitation, how to upgrade the power supply safely, and how to configure per‑port PoE power settings after upgrading.

This article references material from the GWN700X User Manual (PDF) and the online user guide: https://documentation.grandstream.com/knowledge-base/gwn700x-user-guide/

1. Default PoE Limitations

Both GWN7002 and GWN7003 include PoE output on selected LAN ports. However:

• The default power adapter shipped with the router is insufficient to power two WAPs simultaneously.

• In practice, only one WAP will reliably boot and remain stable when powered directly from the router using the stock adapter.

Symptoms of Insufficient PoE Power

If the router cannot supply the WAP's required wattage, you may observe:

• WAP repeatedly rebooting

• WAP failing to adopt in GWN.Cloud or GWN Manager

• WAP wireless radios or PoE passthrough failing intermittently

• LED indicators dropping out under load

According to the GWN700X User Manual (see PDF page 15–16, PoE specifications section), PoE output budgets depend entirely on the connected power supply. The router will not exceed the wattage available from the adapter.

2. Required Power Supply Upgrade

To power two GWN access points from the router, Webvault technicians should replace the stock power adapter with a higher-wattage model.

Recommended Aftermarket Adapter

A suitable replacement available in Australia:

• Jaycar 24V DC 2.5A 65‑Watt Mains Adapter

• Part number: MP3562

• Includes 7 switchable plugs to match the Grandstream router’s DC power socket.

This adapter provides more than double the wattage of the factory adapter, enabling the router to deliver enough PoE power across both PoE ports.

⚠️ Important: Always verify plug polarity when selecting the switchable connector. Grandstream uses centre‑positive DC polarity.

3. Verify PoE Requirements of the WAP

Before installation, confirm the PoE power requirements of the intended access point.

• Different GWN models draw different wattage (typically 13–25W depending on radios and load).

• See the device specification sheet or the PoE section of the GWN WAP manual.

If PoE demand exceeds router capacity—even with the upgraded power adapter—use a proper 802.3af/at PoE injector or PoE switch.

4. Increasing PoE Port Power in the Router Web Interface

Once a higher‑capacity power supply is connected, the router will allow higher wattage allocation per PoE port.

Steps

1. Log into the router web interface.

2. Navigate to: Network Settings → Ports.

3. Select the PoE‑capable port(s).

4. Adjust the PoE Power Limit or Wattage Allocation according to the WAP requirements.

5. Save and apply settings.

In the PDF manual (see page 48–49, Ports Configuration section), the Ports screen shows:

• Per‑port PoE enable/disable

• Maximum wattage settings

• Power usage indicators

⚠️ If inadequate wattage remains available, the interface may refuse the configuration or the WAP will show unstable behaviour. Always match the total wattage budget to the new power supply capacity.

5. Practical Webvault Deployment Notes

• For typical deployments with two PoE WAPs on a GWN7002/7003, the Jaycar MP3562 adapter provides sufficient wattage for stable operation.

• For more than two WAPs, do not use the router for PoE—instead provision a dedicated PoE switch.

• After upgrading power, always check the PoE Status panel in the router's GUI to ensure:

  • Power is being delivered

  • Wattage draw is within limits

  • No overload warnings are present

6. Reference Material

PDF Manual Highlights

• PoE Specifications: Pages 15–16

• Ports Configuration & Power Settings: Pages 48–49

• Hardware Overview Diagrams: Pages 8–12

These diagrams and tables show clearly how PoE output is tied to the total available DC input power.

Online Documentation

For the most current details:
https://documentation.grandstream.com/knowledge-base/gwn700x-user-guide/