System Board; System Board Callouts - 5090 Small Form Factor - Dell OptiPlex 5090 Small Form Factor Service Manual

Steps
1. Align and place the power-supply unit into the slot on the chassis.
2. Slide the power-supply unit into the slot until it clicks in place.
3. Replace the three screws (M6X32) to secure the power-supply unit to the chassis.
4. Route the power-supply cables through routing guides and connect it to the connectors on the system board.
5. Place the support bracket into the slot and secure it with the two screws (M6X32).
6. Connect the optical-drive SATA cable through the retention clip on the support bracket.
Next steps
1. Install the 2.5-inch hard-drive
2. Install the hard-drive and optical-drive
3. Install the side cover.
4. Follow the procedure in

System board

System board callouts - 5090 Small Form Factor

1. Video connector
2. Intrusion switch connector
3. ATX CPU power connector
4. Processor fan connector
5. Memory module connector
6. M.2 SSD PCIe connector
7. Power button connector
8. SD-card reader connector
9. M.2 WLAN connector
assembly.
bracket.
after working inside your computer.
Removing and installing components 55