Side-by-Side Comparison
Power over Ethernet
PoE (802.3af) vs. PoE++ Type 3
Comparing 2 standards across 10 specifications. 10 key differences identified.
Comparing:
PoE (802.3af)
PoE++ Type 3
Power over Ethernet (PoE, IEEE 802.3af Type 1) is a 2003 networking standard that delivers up to 15.40 W of direct current (DC) power from a Power Sourcing Equipment (PSE) port, guaranteeing 12.95 W of usable power at the Powered Device (PD) over two twisted pairs.
Power over Ethernet Plus Plus Type 3 (PoE++ / 4PPoE, IEEE 802.3bt Type 3) is a 2018 standard that supplies up to 60.0 W of DC power per PSE port and guarantees 51.0 W of usable power at the PD by transmitting current across all four twisted pairs simultaneously.
Specification Comparison Table
10 Parameters| Parameter / Spec | ||
|---|---|---|
|
IEEE Standard
|
IEEE 802.3af-2003 | IEEE 802.3bt-2018 |
|
PoE Type
|
Type 1 (PoE) | Type 3 (4PPoE / PoE++) |
|
PSE Output Power (Max)
|
15.40 W | 60.0 W |
|
PD Input Power (Guaranteed)
|
12.95 W | 51.0 W |
|
PSE Output Voltage Range
|
44.0–57.0 V DC | 50.0–57.0 V DC |
|
PD Input Voltage Range
|
37.0–57.0 V DC | 42.5–57.0 V DC |
|
Max Current
|
350 mA | 600 mA per pair set |
|
Twisted Pairs Energized
|
2 pairs (Alternative A or B) | 4 pairs (4PPoE) |
|
Minimum Cable Category
|
Category 3 (Cat 5/5e standard) | Category 5e |
|
PoE Power Classes
|
— | Class 5 (45W PSE) and Class 6 (60W PSE) |