Manual

Figure 20. Inside the Controller

1. controller

2. backup power supply

3. Internal USB port

4. expansion-card riser cage

5. hard-drive assembly

6. memory modules (6)

7. processor heat sinks (2)

Expansion Cards And Expansion-Card Risers

NOTE: A missing or an unsupported expansion-card riser logs an SEL event. It does not prevent your system from

powering on and no BIOS POST message or F1/F2 pause is displayed.

Removing The Expansion-Card Riser Cage And Expansion Cards

CAUTION: Many repairs may only be done by a certified service technician. You should only perform

troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or

telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your

warranty. Read and follow the safety instructions that came with the product.

NOTE: This is a service only procedure.

1. Remove the controller from the NAS appliance.

2. Open the controller.

3. Using a Philips #2 screwdriver, loosen the captive screws that secure the expansion-card riser cage to the

controller chassis.

4. Holding the expansion-card riser cage on its sides, lift the expansion-card riser from the riser connector on the

system board.