NOTE: Filler brackets must be installed over empty expansion-card slots to maintain FCC certification of thesystem. The brackets also keep dust and dirt out of the system and aid in proper cooling and airflow inside thesystem.10. From outside the system, rotate the expansion card latch toward the system until it snaps into place.11. If applicable, install the PCIe card holder.12. Close the system.13. If applicable, place the system upright on a flat, stable surface and rotate the system feet outward.14. Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.Figure 45. Removing and Installing the Expansion Card1. expansion card latch2. expansion card connector3. expansion cardInstalling An Expansion CardCAUTION: Many repairs may only be done by a certified service technician. You should only performtroubleshooting and simple repairs as authorized in your product documentation, or as directed by the online ortelephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by yourwarranty. Read and follow the safety instructions that came with the product.1. Unpack the expansion card and prepare it for installation.For instructions, see the documentation accompanying the card.2. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet andperipherals.3. If applicable, rotate the system feet inward and lay the system on its side on a flat, stable surface.NOTE: For systems installed with the wheel assembly, ensure that you lay the system on a sturdy, stablesurface with the wheel assembly extending off the edge of the surface.4. Open the system.89