Adding SG550X to an existing stack

[STEPHEN STARK]

We have a current stack of five (5) SG550X-48P switches, and are adding a new SG550X-48P switch to the stack.  What is the correct procedure to add this switch to the stack?  And, can we add this switch to the stack without rebooting the entire stack?

[balaji.bandi]

You do not need to reboot :

make sure same version of firmware and compatible to exiting stack:

follow below guide :

https://www.cisco.com/c/en/us/support/docs/smb/switches/cisco-250-series-smart-switches/smb5811-cannot-add-a-new-switch-to-an-existing-stack.html