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UniFi - Supported PoE Output and Input Modes

Overview

This article provides tables with information on the supported Power over Ethernet (PoE) output and input modes for UniFi Switches, Access Points, Cloud Keys, Cameras, and VoIP phones. 

NOTES & REQUIREMENTS:
  • See the device Datasheet, available in the Ubiquiti Downloads section, for more information on the supported PoE modes.
  • See our PoE Adapters page for more information on Ubiquiti PoE adapters/injectors that can be used to power on devices.
  • There is more information on the differences between Active and Passive PoE in the Power Over Ethernet (PoE) article.

Table of Contents

  1. Introduction
  2. UniFi Switches - Supported PoE Output Modes
  3. UniFi Access Points - Supported PoE Input Modes
  4. UniFi Cloud Key - Supported PoE Input Modes
  5. UniFi Cameras - Supported PoE Input Modes
  6. UniFi VoIP - Supported PoE Input Modes
  7. UniFi Switches - Supported PoE Input Modes
  8. Related Articles

Introduction

One of the challenges with large PoE deployments is figuring out how to provide power to your UniFi Access Points. When you have many access points it becomes less viable to power devices using AC PoE injectors. With non-PoE capable switches, you can add a Midspan device which acts as a collection of individual PoE injectors by receiving Ethernet from the switch with only data being transmitted and adding power out over Ethernet through the connection. Such a piece of equipment takes up additional space on your rack, while also costing you a lot of money.

To help with such deployments, UniFi Switches come in a few different models with varying numbers of ports from 8, 16, 24 and 48. These switches are endspan devices as they act as both the switch and provide PoE to devices. UniFi switches give you greater functionality when used with the different UniFi Access Point (UAP), UniFi Dream Machine (UDM), and UniFi Security Gateway (USG) models, and cost well under the amount of the midspan device alone.

UniFi Switches - Supported PoE Output Modes

Ubiquiti devices can use two types of PoE output modes:

  • Active PoE The voltage that the Powered Device (PD) needs is negotiated. Example output modes are IEEE 802.3af, 802.3at and 802.3bt.
  • Passive PoE A fixed output voltage is provided and there is no negotiation performed. Example output modes are 24V, 48V and 54V. 

UniFi Switches integrate switch functionality with Ubiquiti device/network management via the UniFi Network Controller while also providing PoE output to power access points, Cloud Keys, cameras, among others. Different switches provide different output methods, so it's important to learn what power method the UniFi switches support and compare it with the power method needed to power the different devices: UAPs, UCKs, UVCs, and UVPs.

It's important to note that each switch has a maximum power consumption which should be considered when powering multiple UniFi devices via PoE. For example, a US-16-150W has a 150W maximum power consumption, even though it has 16 ports. The UAP-HD has a maximum power consumption of 17W. Therefore, if you were to power 16 UAP-HD on a US-16-150W, there is a possibility that the wattage could exceed what the switch is capable of supplying in certain conditions. Find each device's power consumption in their Datasheets, found in the Downloads page, within each product's Documentation section.

Model

Passive 24V

802.3af

802.3at

802.3bt

USW-Pro-48-PoE -

(Ports 41-48)

USW-48-PoE -

(Ports 1-32)

(Ports 1-32)

-
US-48-750W -
US-48-500W -
US-48 - - - -
USW-Pro-24-PoE -

(Ports 17-24)

USW-Pro-24 - - -

-

USW-24-PoE -

(Ports 1-16)

(Ports 1-16)

-
US-24-500W -
US-24-250W -
USW-24 - - - -
US-24 - - - -
USW-16-PoE -

(Ports 1-8)

(Ports 1-8)

-
USW-Lite-16-PoE -

(Ports 1-8)

(Ports 1-8)

-
US-16-150W

-
US-16-XG -

-

-

-
USW-Lite-8-PoE  - -

(Ports 1-4)

- 
USW‑Industrial -

(Ports 1-8)

(Ports 1-8)

(Ports 1-8)

US-8

(Port 8)

US-8-60W

(Ports 4-8)

 -
US-8-150W  -
US-XG-6POE  -
USW-Flex  -  
USW-Flex-Mini - - - -

UniFi Access Points - Supported PoE Input Modes

Model

Passive 24V

802.3af

802.3at

802.3bt

UAP-AC-PRO  -  -
UAP-AC-LR

**
(Mode A)

 -
UAP-AC-LITE

**
(Mode A)

 -
UAP-AC-IW  -

*

*

UAP-AC-IW-PRO -

*

*

UAP-AC-EDU  -
UAP-AC-M

(Mode A)

 -
UAP-AC-M-PRO  -  -
UAP-nanoHD  -
UAP-IW-HD

*

*

UAP-AC-HD  -

UAP-AC-SHD -

UAP-XG  -  -
UWB-XG  -
UAP-FlexHD - - -
UAP-BeaconHD - - - -
NOTE: * The IW models only support PoE Pass-Through when powered by 802.3at.

** UAP-AC-LRs with a date code of 1634 or board revision 17 and following ones, support 802.3af in addition to 24V passive PoE.
** UAP-AC-LITEs with a date code of 1634 or board revision 33 and following ones, support 802.3af in addition to 24V passive PoE.

Legacy Devices - Power Methods

Model

Passive 24V

802.3af

802.3at

802.3bt

UAP
UAP-LR  -  -
UAP-PRO  -
UAP-AC  -
UAP-AC-Outdoor  -
UAP-Outdoor  -
UAP-Outdoor+  -  
UAP-Outdoor5  -
UAP-IW  -

*

*

 -
NOTE: * The UAP-IW only supports PoE Pass-Through when powered by 802.3at.

UniFi Cloud Key - Supported PoE Input Modes

Model

Passive 24V

802.3af

802.3at

802.3bt

UC‑CK  -
UCK-G2-PLUS  -
UCK-G2  -  -

UniFi Cameras - Supported PoE Input Modes

Model

Passive 24V

802.3af

802.3at

802.3bt

UVC-G3   -  -
UVC-G3-AF    -
UVC-G3-DOME    -
UVC-G3-MICRO -

*

- -
UVC‑G3‑PRO - - -
UVC-G3-Flex - - -
UVC-G4-PRO - - -
NOTE: * Supported when using the included 802.3af Instant PoE Adapter. See the QSG for more information. 

UniFi VoIP - Supported PoE Input Modes

Model

Passive 24V

802.3af

802.3at

802.3bt

UVP-TOUCH - - -
UVP  -
UVP‑PRO  -
UVP‑Executive  -

UniFi Switches - Supported PoE Input Modes

Model

Passive 24V

802.3af

802.3at

802.3bt

US-8  -  
USW-Flex    
USW-Flex-Mini  

Related Articles

Back to Top

UniFi - Secondary Ethernet Ports on UAPs

Intro to Networking - Power Over Ethernet (PoE)

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