Dell OptiPlex XE3 Small Form Factor Service Manual page 46

3. To release the PSU:
a. Disconnect the CPU power cable from the system board [1].
b. Unroute the power cables from the retention clips on the chassis [2,3].
c. Disconnect the system power cable from the connector on the system board [4].
4. To remove the PSU:
a. Remove the screws (3) that secure the PSU to the system [1].
b. Press the blue release tab at the rear end of the PSU unit [2].
c. Slide the PSU and lift it away from the system [3].
46 Демонтаж і повторний монтаж