| CAUTION: To avoid injury, do not touch any wires, terminals, and parts with a high-voltage hazard sign. Fan trays are hot-swappable. To replace a fan tray when the switch is operating, pull out the fan tray after it stops rotating. Keep your hands away from the spinning fan blades when removing the fan tray. To ensure normal operation of the switch, do not keep the switch working without a fan tray for a long time. When removing a fan tray, hold the bottom of the fan tray to pull it out thoroughly.
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![[CAUTION: ]](images/caution.png)