I have a second 6450-48P with a dead POE board (scorched POE chip with a hole in it haha). I pulled the POE board out, and was going to use it as a non-POE swtich, however having done that, the fans are now running full speed all the time, and never spin down.
If I reinstall the POE board, the fans go back to normal, and spin down after boot. Does anyone know if there is any way to work around this? The switch is still spitting out POE power on about half its ports, and the switch OS has no control over it, so I'd rather not have it installed if I can avoid it.