There are several standards for Active/ Standard POE, which specify the maximum amount of power that can be delivered over Ethernet cables.

Here is a list of some popular PoE midspan and endspan devices for your consideration.

Unifi Active PoE Switch

Here are the four main POE standards:

1. IEEE 802.3af (PoE): 

1. Power Delivery: Up to 15.4W of DC power per port (min of 12.95W guaranteed at the powered device).
   
2. Supply voltage of 44-57V DC, current, 0.1-0.35A
3. Pin Configuration: Mode A or Mode B.
   
4. Powering Options: Delivers power over the same pairs used for data transmission (pins 1, 2, 3, and 6 in Mode A or pins 4, 5, 7, and 8 in Mode B).
   
5. Ethernet Cable: Utilizes Category 3 or higher-grade cables (e.g., Cat 5, Cat 5e, or Cat 6) for power and data transmission.
   
6. Typical Use Cases: IP phones, wireless access points, and low-power network devices.
   

2. IEEE 802.3at (PoE+):

1. Power Delivery: Up to 30W of DC power per port (min of 25W guaranteed at the powered device).
   
2. Supply voltage of 50-57V DC, current 0.01-0.6A
3. Pin Configuration: Mode A or Mode B.
   
4. Powering Options: Supports both Mode A and Mode B power delivery.
   
5. Ethernet Cable: Utilizes Category 5e or higher-grade cables (e.g., Cat 6 or Cat 6a) for power and data transmission.
   
6. Typical Use Cases: High-power wireless access points, pan-tilt-zoom (PTZ) IP cameras, LCD displays, biometric sensors and advanced network devices requiring higher power levels.
   

PoE+ (IEEE 802.3at) is backwards compatible with POE (IEEE 802.3af) meaning it will power even legacy POE power devices.

3. IEEE 802.3bt (PoE++, 4PPoE, or Type 3/ 4 PoE): 

1. Power Delivery - Provides two power levels:
   
1. Type 3: Up to 60W of DC power per port (min of 51W guaranteed at the powered device).
   
2. Type 4: Up to 100W of DC power per port (min of 71W guaranteed at the powered device).
2. Pin Configuration: Mode A or Mode B.
   
3. Powering Options: Supports both Mode A and Mode B power delivery.
   
4. Ethernet Cable: Utilizes Category 5e or higher-grade cables (e.g., Cat 6 or Cat 6a) for power and data transmission.
   
5. Typical Use Cases: High-power devices such as video conferencing systems, lighting systems, and industrial applications.
   

 (IEEE 802.3bt) is backwards compatible with both IEEE 802.3af and IEEE 802.3at meaning it will power even legacy POE power devices.

4. UPoE (Cisco Ultra-PoE):

This is a proprietary standard developed by Cisco that provides up to 60 watts of power per port. It is similar to IEEE 802.3bt, but it uses a different power management system.

Note that the power sourcing equipment (PSE), such as a PoE-enabled switch or injector, must comply with the corresponding PoE standard to ensure compatibility with powered devices (PDs). Additionally, PDs must also adhere to the specific PoE standard requirements to receive power safely and efficiently over Ethernet cables.

Table of Comparison:

Type	Standard	PD Min. Power Per Port	PSE Max. Power Per Port	Cable Category	Power Over Pairs	Voltage at PSE (VDC)	Voltage at PD (VDC)	Maximum Current in (A) per pair
Type 1	IEEE 802.3af	12.95W	15.4W	Cat3/5	2 pairs	44 - 57	37 -57	0.35
Type 2	IEEE 802.3at	25W	30W	Cat5	2 pairs	50 - 57	42 - 57	0.6
Type 3	IEEE 802.3bt	51W	60W	Cat5/6	2 pairs class 0-4, 4 pairs class 5-6	50 - 57	42 - 57	0.6
Type 4	IEEE 802.3bt	71W	100W	Cat5/6/7	4 pairs class 7-8	52 - 57	41 - 57	1.0

These standards allow network administrators to power a wide range of devices through Ethernet cables, reducing the need for separate power supplies and making network deployments more flexible and efficient.

For your customized PoE solutions contact an Rfwel Power Solutions specialist here.