Status and Statistics
Health and Power
58 Cisco 350, 350X and 550X Series Managed Switches, Firmware Release 2.4, ver 0.4
5
Fans
In some devices the fans are mandatory for the device operation since without them the device 
becomes too hot and automatically shut-down. Since a fan is a moving part, it is subject to 
failures. A redundant fan is installed on the system. This fan is not operational unless one or 
more of the system fans fails. In this case, the redundant fan becomes part of the environment 
monitoring of the device.
It is recommended to let the redundant fan work for at least 1 minute once a day.