The prosafe fs108p provides power and data from a single point using power over ethernet poe over a single cat 5 cable the eight fast ethernet ports can be used for any 10100 mbps link and four of these ports can supply industry standard ieee 8023af power advanced auto sensing algorithm gives power only to 8023af end devices so no need to worry about damaging proprietary poe or non poe equipment in addition it discontinues the power when poe devices are disconnected easy and reliable