Dell EqualLogic PS4100 Hardware Maintenance Manual page 38

PS4100 Hardware Maintenance Guide Maintaining Power Supply and Cooling Modules
Figure 23 Inserting a Power Supply and Cooling Module
3. Make sure the power switch is in the OFF position.
4. Connect the power cable to the power supply and cooling module and plug the cable into a power outlet.
Note: The AC LED lights up when the AC power cable is connected, even if the switches on the power
supply are off.
5. Secure the power cable using the hook-and-loop fastener strap. See Figure 24.
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