Just to add to the procedure:
Per the Summit Family Hardware Install Guide:
"Summit VIMs are not hot-swappable. Disconnect power to the switch before removing an installed VIM. After a VIM is installed in a compatible switch, you can hot-swap the installed SFP, SFP+, and QSFP+ modules. Use only SFP, SFP+, and QSFP+ modules approved by Extreme Networks."
