Netgear M4300-24X24F (XSM4348S) - Stackable Managed Switch with 48x10G including 24x10GBASE-T and 24xSFP+ Layer 3 Guia Do Programa

Power over Ethernet (PoE) describes a technology to pass electrical power safely along with 
data on existing Ethernet cabling. The power supply equipment (PSE) is the device or switch 
that delivers electrical power, and the PD or powered device is the end device that powers up 
through the power delivered along the Ethernet cable.

The switch supports PoE and PoE+ as follows:

PoE (802.3af 2003). This is the original standard, also known as the low-power standard, 
which mandates delivery of up to 15.4 watts by the PSE. Because of power dissipation, 
only 12.95 watts are assured to be available at the powered device (PD). The PD needs 
to be designed so that it can accept power over Ethernet cabling. Category 3 cables can 
be used to deliver power to the PD. However, with the advent of 802.11n, the newer 
wireless APs required more power. To account for this, a newer standard was developed 
in 2009, known as 802.3at.

PoE+ (802.3at-2009). This is a newer standard than PoE. This is also known as the 
high-power standard, which mandates delivery of up to 34.2 watts by the PSE. Because 
of power dissipation, PoE+ provides only a maximum of 25.5 watts at the powered 
device. Some PSEs can provide up to 51 watts. Before this standard became available in 
2009, the industry started using different implementations to allow for more power. All 
these needed to be brought under the purview of the newer 802.3at standard. 

PoE and PoE+ are supported only on physical, copper interfaces. The 
default port mode is PoE+.

Use this command to enable the Power over Ethernet (PoE) functionality on a global basis or 
per interface.

Default

enabled

Format

poe

Mode

Global Config

Interface Config