D-Link DWL-P100 Manual page 2

Introduction
About Power Over Ethernet (POE)
The DWL-P100 Power Over Ethernet (POE) Adapters are design to supply
operational power to a Wireless Access Point. These Power Over Ethernet
Adapters give users the ability to mount an Access Point virtually anywhere
in a building no matter where the power outlet is located such as ceilings,
attics, or roofs. It eliminates the need to use an AC-DC power supply at the
Access Point making the setup more convenient. D-Link's DWL-P100 Power
Over Ethernet Adapters take advantage of the unused cable pairs within
Ethernet Cat 5 cabling. The Base Unit inserts DC voltage into the unused
wires therefore allowing the single Category 5 cable to carry both Ethernet
data and DC power to an Access Point. The POE Terminal Unit splits the data
and DC power apart, which is then supplied to the Access Point.
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