Use this POEfinder to determine if a network cable or port is
When you plug a network cable into the tester (or connect
the tester to a network jack),
an LED will light up if active 24-48V PoE is detected.
The tester will also indicate if the PoE is active on the
endspan (1-2/3-6) or midspan (4-5/7-8) pairs.