Dell GX280DT User Guide - Page 128

2. Disconnect the DC power cables from the system board and the drives. Note the routing of the DC power cables underneath the tabs in the computer frame as you remove them from the system board and drives. You must route these cables properly when you replace them to prevent their being pinched or crimped. 3. Remove the four screws that attach the power supply to the back of the computer frame. 4. Press the release button located on the floor of the computer frame. 1 release button 2 power supply 3 screws (4) 4 AC power connector 5. Slide the power supply toward the front of the computer approximately 1 inch. 6. Lift the power supply up and out of the computer. 7. Slide the replacement power supply into place. 8. Replace the screws that secure the power supply to the back of the computer frame. 9. Reconnect the DC power cables. 10. Connect the AC power cable to the connector. 11. Close the computer cover. 12. Attach the computer stand, if used. NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer. 13. Connect your computer and devices to electrical outlets, and turn them on. DC Power Connectors Small Form-Factor Power Supply DC Connector Pin Assignments