PowerDsine IEEE802.3 - Manual (Page 21)

PowerDsine Presentation October 2005 Page 21
www.PowerDsine.com
Summary
„ The conflict level is pretty much reduce by the previous
recommendations
„ Compliant 802.3at PSE is the one with 51V minimum
„ Physics allow to support most of the higher power classed even
with 44V ((enhanced classification part A group). which is built in
benefit however it doesn't concerns the other standard
requirements nor affect it.
„ It is perfectly OK that Switch/PSE is 802.3at compliant as long as
its Power Supply supports 51V.
„ If PSE PS Power Supply is 44V, then 802.3at PSE is not compliant
but working and covered most of high power classes