Selection of a PoE switch for Ubiquiti devices

Selection of a PoE switch for Ubiquiti devices

Eurodk.com
2019-05-29

All Ubiquiti devices of airMax M, AirMax AC, UniFi, UniFi Video and AirFiber series use PoE. As a rule, all of them are equipped with their own PoE power adapters. However, with a large number of devices, using a separate adapter for each device is inconvenient. In addition, in some cases devices are supplied without adapters (for example, UniFi AC access points in boxes of 4-5 devices). In this case, specialized PoE switches that can provide power to multiple devices can help out.


PoE options in Ubiquiti devices.

 

Choosing the right switch can be difficult due to the large number of PoE variations used in Ubiquiti devices. First, you should understand what "standards" are used in Ubiquiti equipment.

The first type of power supply is passive PoE mode. In this case, the power supply is always supplied to the selected pairs (usually 4.5+ and 7.8-) regardless of which device is connected. A certain danger of this mode is that if you connect a non-PoE device, there is a risk of damaging the network card. There are 4 main types of adapters (with amperage variations):

•24 volts 10/100 Ethernet
•24 volts GB Ethernet
•48 volts 10/100
•48 volt GB Ethernet

These adapters are used by airMax M, AirMax AC, UniFi and UniFi Video series devices.

AirFiber24/AirFiber5 series devices use 50 volts, 1.2 amperes GB Ethernet adapters using pairs of 1,2,4,5+ and 7,8,3,6-.
AirFiberX series uses adapters for 24 volts, 1A GB Ethernet using pairs of 1,2,4,5+ and 7,8,3,6-. These adapters are not compatible with other device series.

The second type is adaptive PoE of 802.3 af/at standard. The voltage varies and is approximately 50 volts. The maximum capacity is 15.4 watts for the af standard and up to 30 watts for the at standard. Almost all Ubiquiti Devices equipped with 48 volt Passive PoE adapters also support the 802.3 af standard (for example, Rocket Ti, UniFi AP Pro, UniFi AP AC). However, there are exceptions. The wall-mounted UniFi InWall access point requires only 802.3 af/at. At the same time, UVG G3 Dome video camera supports Passive PoE 24 volts or 802.3 af.


PoE Switches.

 

The first line of PoE switches produced by Ubiquiti was called TOUGHSwitch and included 3 devices:

•Ubiquiti TOUGHSwitch PoE - a 5-port Gigabit managed switch supporting ONLY passive PoE with 24 volts voltage.
•Ubiquiti TOUGHSwitch PoE PRO - an 8-port Gigabit managed switch supporting passive PoE with 24 or 48 volts voltage.
•Ubiquiti TOUGHSwitch PoE CARRIER - in fact, two TOUGHSwitch PoE PRO switches combined by a common frame for rack mounting.

It is easy to see that the TOUGHSwitch PoE switch is only suitable for powering devices that support 24 volts voltage. The list includes almost all devices of the AirMax series (except Rocket Ti), junior models of UniFi access points and UVC video cameras (except the Pro model).
Ubiquiti TOUGHSwitch PoE PRO and Ubiquiti TOUGHSwitch PoE CARRIER Switches support almost all Ubiquiti devices except UniFi InWall access point.
It should be noted that all AirFiber and AirFiberX devices are not supported by the TOUGHSwitch switches.
The following switch series, EdgeSwitch and UniFi Switch, practically do not differ from each other in terms of hardware. The main difference between them is the type of control. The EdgeSwitch series has its own WEB interface, while the UniFi Switch is controlled by a software controller common to all devices of the UniFi series. These lines include switches that differ in the number of ports and the maximum possible capacity of connected PoE devices. Any of the switches in these series can be configured to deliver 24 volts Passive PoE or 802.3 af/at voltage on each port. Currently, the lines include:


UniFi Switch:


Ubiquiti UniFi Switch US-8-150W - 8-port Gigabit managed switch with two SFP ports and the maximum capacity of up to 150 watts.
Ubiquiti UniFi Switch US-24-250W - 24 -port Gigabit managed switch with two SFP ports and the maximum capacity of up to 250 watts.
Ubiquiti UniFi Switch US-24-500W - 24-port Gigabit managed switch with two SFP ports and the maximum capacity of up to 500 watts.
Ubiquiti UniFi Switch US-48-500W - 48-port Gigabit managed switch with two SFP ports, two SFP+ ports and a maximum capacity of up to 500 watts.
Ubiquiti UniFi Switch US-48-750W - 48-port Gigabit managed switch with two SFP ports, two SFP+ ports and a maximum capacity of up to 750 watts.


EdgeSwitch (only PoE switches are considered):


Ubiquiti EdgeSwitch ES-16-150W - 16-port Gigabit managed switch with two SFP ports and a maximum capacity of up to 150 watts.
Ubiquiti EdgeSwitch ES-24-250W - 24-port Gigabit managed switch with two SFP ports and a maximum capacity of up to 250 watts.
Ubiquiti EdgeSwitch ES-24-500W - 24-port Gigabit managed switch with two SFP ports and a maximum capacity of up to 500 watts.
Ubiquiti EdgeSwitch ES-48-500W - 48-port Gigabit managed switch with two SFP ports, two SFP+ ports and a maximum capacity of up to 500 watts.
Ubiquiti EdgeSwitch ES-48-750W - 48-port Gigabit managed switch with two SFP ports, two SFP+ ports and a maximum capacity of up to 750 watts.

Due to support of two PoE types, the switch series EdgeSwitch and UniFi Switch can power all types of Ubiquiti devices, as well as most PoE compatible equipment from other manufacturers. An exception is the AirFiber and AirFiberX series of equipment which is not supported by these switches.

The third series, EdgePoint, is formally a part of the EdgeMax product line, but includes devices in a weatherproof design. They are intended for installation on masts and towers of communication operators.
This line includes the following devices:

EdgePoint R6 router - a 5-port Gigabit router with one SFP port. 5 ports support passive PoE mode of 24 volts.
EdgePoint R8 router - a Gigabit router with 6 Gigabit Ethernet ports and two combined Ethernet/SFP ports. Two ports support passive PoE mode of 24 or 54 volts, 1.4 amperes with the use of 1,2,4,5+ and 7,8,3,6- pairs. 5 ports support conventional passive PoE mode of 24 volts.
EdgePoint S16 switch - a16-port Gigabit managed switch with two SFP+ ports. Four ports support passive PoE mode of 24 or 54 volts, 1.4 amperes with the use of 1,2,4,5+ and 7,8,3,6- pairs. 12 ports can be configured in the PoE mode to supply 24 volt

Passive PoE or 802.3 af/at power.
Therefore, EdgePoint R6 can be used to power most devices in the AirMax line. EdgePoint R8 also supports the AirFiber/AirFiberX family of devices. The EdgePoint S16 switch supports all types of Ubiquiti devices, including AirFiber/AirFiberX.

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