# PSE

> Type of network devices

**Wikidata**: [Q8984550](https://www.wikidata.org/wiki/Q8984550)  
**Source**: https://4ort.xyz/entity/pse

## Summary
PSE stands for Power Sourcing Equipment, a type of network device that provides power over Ethernet (PoE) to connected devices. It is classified as networking hardware and functions as a product within the power over Ethernet ecosystem.

## Key Facts
- PSE is an instance of product in the networking hardware category
- It is part of the power over Ethernet system
- The term "PSE" is an alias for Power Sourcing Equipment
- It is classified as a subclass of networking hardware
- According to Wikidata, it is described as a type of network device
- The entity has 35 sitelinks across various platforms
- It mediates data in computer networks as part of its networking hardware function

### Q: What does PSE stand for?
A: PSE stands for Power Sourcing Equipment, which is network hardware that provides power over Ethernet to connected devices.

### Q: What is the primary function of PSE?
A: The primary function of PSE is to supply power to devices through Ethernet cables, enabling both data transmission and electrical power delivery over a single connection.

### Q: How is PSE classified in networking?
A: PSE is classified as networking hardware and is specifically a subclass of networking devices that provide power over Ethernet capabilities.

## Why It Matters
PSE technology is fundamental to modern network infrastructure because it eliminates the need for separate power supplies for network-connected devices. This integration simplifies installation, reduces cabling complexity, and enables flexible device placement without proximity to electrical outlets. PSE devices are essential for powering VoIP phones, wireless access points, IP cameras, and other networked equipment in both enterprise and residential settings. By combining data and power delivery, PSE technology has become a cornerstone of efficient network design, reducing costs and improving scalability while maintaining reliable power delivery to critical network endpoints.

## Notable For
- Enables Power over Ethernet (PoE) functionality in networks
- Eliminates need for separate power adapters for network devices
- Supports flexible device placement independent of electrical outlet locations
- Reduces installation complexity and cabling requirements
- Classified as essential networking hardware in modern infrastructure

## Body
### Technical Classification
PSE devices are formally classified as networking hardware products that specifically handle power delivery functions within Ethernet networks. This classification places them alongside other network infrastructure components like switches, routers, and access points.

### Power Over Ethernet Integration
As part of the power over Ethernet ecosystem, PSE devices inject DC power into Ethernet cables alongside data signals. This integration allows compatible devices to receive both power and data through a single cable connection, streamlining network architecture.

### Network Device Functionality
PSE equipment mediates data transmission while simultaneously providing electrical power, making it a dual-function network component. This capability is particularly valuable in environments where running separate power lines would be impractical or costly.

### Industry Standards Compliance
While specific standards aren't mentioned in the source material, PSE devices typically adhere to IEEE PoE standards (802.3af, 802.3at, 802.3bt) to ensure compatibility and safe power delivery across different manufacturers and device types.

### Application Scope
PSE technology supports a wide range of network-connected devices including VoIP phones, wireless access points, IP security cameras, and IoT sensors. This versatility has made PSE an essential component in both enterprise networks and smart building installations.