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Installing ICX7400-4X10GF modules in an existing stack

New Contributor
I have a 2 member 7450 stack and I need to install an ICX7400-4X10GF module into each unit in the stack.  I know each switch stack unit needs to be powered off to insert the module, but my question is: Does the entire stack need to be powered off and both modules installed at once OR can I maintain as much uptime as possible by installing the modules one at a time as follows:
  1. Power off unit 1
  2. Install ICX7400-4X10GF module in unit 1
  3. Power up unit 1
  4. Confirm unit 1 recognizes the new module and is active in the stack
  5. Power off unit 2
  6. Install ICX7400-4X10GF module in unit 2
  7. Power up unit 2
  8. Confirm unit 2 recognizes its new module, all is happy, and the stack is fully functional
If this will work, the switch stack never totally goes down and the dual-homed devices connected to the stack will continue to function.  Does this sound like it will work or will the stack get upset that one member has a module while the other does not? In the end, the hardware configuration will match, but there would be a short time where one unit has an ICX7400-4X10GF module and the other unit does not.