I made a circuit for the linksys WRT54G in order to give power. The circuit i copied from here where you can see it: http://patraswireless.net/forum/index.php?act=ST&f=22&t=425&s=0100238e01c0d6c53bdb5e676fa0540f it is in greek but you all can understand it that circuit as you can see has an output of 12V i made it and i had steady 11,92V but when i put it in my linksys after a while it switched off. Then i put again its power adaptor and it worked perfectly. Can anyone tell me why the linksys is switching off with the i made? The circuit doesn't seem to have smt wrong. Is there any other circuit that we can construct?(i searched in the net but i didn't find anything) I DONT WANT TO BUY THE POE ADAPTOR THAT LINKSYS SELLS!!!