You can install or remove QSFP modules in your switch without powering off the system.
Warning
QSFP modules contain Class 1M lasers. Invisible laser radiation can occur when laser connections are unplugged. Do not stare into the beam. This device is compliant with IEC 60825-1 Amendment 2 and CFR21Section 1040.If your module has a protective pad covering the card-edge connector, remove it. Store the antistatic container, dust covers, and card-edge connector protective pad in a clean location from which they can be easily retrieved if you need to uninstall the module.