Lenovo ThinkCentre 3379 User Manual page 39

5. Disconnect the power supply assembly cables from all drives and from the
power connectors 1 and 2 on the system board.
Note: You might need to remove the hard disk drive to gain easy access to
the power connector 2 . See "Replacing the hard disk drive" on page
24.
Figure 24. Power connectors on the system board
6. Release the power supply assembly cables from the cable clips and ties in the
chassis.
7. Slide the power supply assembly away from the chassis and remove it from
the computer.
Figure 25. Removing the power supply assembly
Chapter 2. Installing options and replacing hardware
31