Dell OptiPlex Small Form Factor Plus 7020 Owner's Manual page 117

Figure 73. Installing the system board
9. Align the screw hole on the bay-support bracket with the screw hole on the chassis.
10. Replace the two (#6-32) screws that secure the bay-support bracket to the chassis.
11. Route and connect the hard-drive cable to its connector (SATA-0) on the system board.
12. Place and align the front I/O-bracket with I/O slot on the chassis.
13. Replace the screw (#6-32) that secures the front I/O-bracket to the chassis.
Next steps
1. Install the optional I/O
2. Install the processor.
3. Install the processor fan and heat-sink
4. Install the external SMA antenna
5. Install the intrusion switch.
6. Install the wireless card
7. Install the solid-state
8. Install the memory modules.
9. Install the graphics card.
10. Install the media-card
11. Install the disk-drive cage.
12. Install the 3.5-inch hard
13. Install the front bezel.
14. Install the side cover.
15. Follow the procedure in
modules, whichever applicable.
assembly.
module, if applicable.
or the external SMA antenna, whichever is applicable.
drives.
reader, if applicable.
drive, if applicable.
After working inside your computer.
Removing and installing Field Replaceable Units (FRUs) 117