On Boot Up Vkvm /Monitor Does Not Display Any Output; Console Output Not Visible / Console Port Not Working - Cisco 5520 Troubleshooting Manual

Troubleshooting
Not able to detect the 1G SFP
Port and Link LEDS

On Boot up vKVM /Monitor does not display any output

Solution
Display Port / VGA Terminal is not supported.
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Console output not visible / Console port not working

Solution
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Cisco 5520 and 8540 Wireless Controller Troubleshooting Guide
14
Connect the RJ45 console at the rear or use console of break out connector.
Check if the correct console port is connected and not VGA/Video port
Check if baudrate is 9600