BasicInternet:Power over Ethernet specification
From its-wiki.no
Power over Ethernet specification | |||||||
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Power over Ethernet (PoE)
Power over Ethernet (PoE) is defined by two standards:
- IEEE 802.3af
- IEEE 802.3at
The first one, 802.3af, is the first published standard, and the second one, 802.3at, also known as PoE+ or PoE plus, is an evolution of the first which provides more power.
On the other hand, MikroTik does not follow those standards even if it says its devices are PoE capable. The input voltage range is different and thus, it offers some additional products to transform any standard PoE source into a compatible input.
The following table describes the two IEEE standards and some MikroTik PoE speficifations:
MikroTik
RB951Ui-2HnD |
MikroTik
RBSTX-5HPnD |
MikroTik
RBSTXG- 5HPnD-SAr2 |
MikroTik
mAP 2n |
IEEE 802.3at | IEEE 802.3af | |
---|---|---|---|---|---|---|
Voltage range
at end device |
8-30V | 8-30V | 8-30V | 10-57V | 42.5-57V | 37-57V |
Voltage range at
powering device |
- | 24V power
supply |
24V power
supply |
- | 50-57V | 44-57V |
Power at end
device |
7W | 7W | 11W | - | 25.5W | 12.95W |
Power at
powering device |
- | 19.2W | 19.2W | - | 30W | 15.4W |
Requirements | RBPOE
PoE injector |
RBPOE
included |
RBPOE
included |
RBPOE
PoE injector |
Cat5 cable | Cat3 or Cat5 |
Notes | Passive PoE | Passive PoE | Passive PoE |
Solar Power
MikroTik has a well explained wiki page with a complete description about Solar Power.