Dell PowerVault 715N (Rackmount NAS Appliance) - Manual (Page 23)

To remove a power supply, perform the following steps.
CAUTION: Avoid touching the cable connectors on the power supply. Wait 10 to 20 seconds after
disconnecting the power cord before removing the power supply or coming into contact with its cable
connectors.
1. Turn off the system, including any attached peripherals, and disconnect the system from its electrical outlet.
2. Open the bezel .
3. Remove the system cover .
4. Remove the fan assembly .
5. Disconnect the two DC power connectors on the system board (see Figure 9 ).
6. Using a #1 Phillips screwdriver, remove the four Phillips screws securing the power supply to the back of the
system chassis.
7. Push the power supply forward (and away from the back panel) about 6.3 mm (0.25 inch).
The power supply must clear the locking tab on the floor of the chassis.
8. Lift the power supply out of the chassis.
Expansion Card
The system has a single PCI expansion-card socket that connects to the system board through a riser card (see
Figure 11 ).
NOTICE: You can only install low-profile PCI expansion cards in this system.
CAUTION: Read the safety instructions in your System Information document.
Figure 11. Expansion-Card Replacement
1 Expansion card