hi: dear all! i have a catalyst 5509,used half year,recently i found the first power supply power supply led which is on the power turned red.i turn off the power supply and turn on .the power's fan work for 3-5 second and don't work. i have to unplug the power cable and plug it in again ,everything is ok ,but during sometime .the mistake happened again.show logging display power supply 1 is failed! what's the problem with this power supply,another power supply is ok thank you for your help! _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]