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DEL HTML anchors from posts as they are going to be added automaticly with new ssg

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Caffeine Fueled 2025-10-27 20:20:04 +01:00
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@ -10,7 +10,7 @@ PoE generally requires Cat5+ cables and has a normal working distance of 100m. A
The usage of PoE over a connection should not have any effect on the transfer or latency of the data connection. That said, cheap hardware can still do, and I had 3 cases in which turning off PoE explicitly on a switch port helped to solve a problem with disconnecting a non-PoE device. I still blame the printers.
# Specification <a href="#specification" id="specification">#</a>
# Specification
The following standards were created by the Institute of Electrical and Electronics Engineers (IEEE), and the following overview should give you a quick insight of the differences of the common standards.
@ -48,7 +48,7 @@ The following standards were created by the Institute of Electrical and Electron
**UPoE/UPoE+** are Cisco proprietary and I won't go into detail. I think it is still worth mentioning.
# Active PoE / Passive PoE <a href="#active-passive" id="active-passive">#</a>
# Active PoE / Passive PoE
Active and passive PoE are **not inter-compatible** and PSE and PD must support the same type.
@ -60,7 +60,7 @@ PSE with **active PoE** does a handshake with the PD to determine how much power
**Side note**: some passive PoE PSEs can have a shorter distance and be limited to 100Mb/s.
# Power management classes <a href="#power-classes" id="power-classes">#</a>
# Power management classes
Power management classes prevent the over-powering of PDs.
@ -75,7 +75,7 @@ Class - power at PD:
: **Class 7** - 62W *(802.3bt Type 4)*
: **Class 8** - 71,3W *(802.3bt Type 4)*
# Modes <a href="#modes" id="modes">#</a>
# Modes
There are three modes available. The following modes determine what pairs the power will be delivered to the PD. **Mode A** provides the power over the same pairs that are used for the data transfer (T568A pairs #1 + #2, T568B pairs #2 + #3) and **Mode B** delivers the power over the spare pairs (T568A + T568B pairs #3 + #4). **4PPoE** stands for 4-pairs Power over Ethernet - and as the name implies - uses all four pairs to deliver the power to the PD.