I must admit to being VERY confused by the situation wrt Linksys support for PoE. This is not helped by the fact that I can't find any specs for this feature anywhere. My situation is that I have three WET54Gs that I would like to supply by PoE. I have obtained some 802.3af PoE injectors which are totally standard - they inject 48v DC onto the appropriate pins. When I try and use the WET54Gs with these injectors, however, they seem to work fine APART from the fact that there is a hissing noise coming from the units which isn't there when using the 5v DC adapter supplied with the units. This sounds very much to me like the voltage regulators are being over-stressed by being fed a higher voltage than they are designed to cope with, but I have been assured by Linksys support (they didn't sound that confident about it though) that the WET54G is designed to work with standard 802.3af PoE injectors. If I could actually see some clear spec that says all is OK with this I might be happier, but as things stand I am not enthusiastic about installing these devices in case they just go pop in a very short time and I am called out to replace them at great inconvenience (they will be mounted in weathertight enclosures on three high chimneystacks). I would be grateful if someone could let me know what the exact situation is here. Seeing a release like the one above doesn't help that much, as Linksys here are clearly describing a version of PoE that doesn't conform to the 802.3af standard. It may be power supplied by the ethernet cable, but I think it is rather misleading to use the terminology Power over Ethernet, or PoE, when there is a standard for this which is at a different voltage than this Linksys kit.