OptiPlex XE3 Tower Service Manual

Installing the system board

1. Hold the system board by its edges and align it toward the back of the computer [1,2].
   
2. Lower the system board into the computer until the connectors at the back of the system board align with the slots on the chassis, and the screw holes on the system board align with the standoffs on the computer.
3. Tighten the screws (8) to secure the system board to the computer [1].
   
4. Align the cables with the pins on connectors on the system board and connect the following cables to the system board:
5. Route all the cables through the routing clips.
   1. power distribution for optical drive and hard drives [1]
   2. PSU [2]
   3. speaker cable [3]
   4. SATA data cable for optical dive and hard drive cables (4 cables) [4]
   5. PSU cable [5]
   
6. Install the:
   1. memory module
   2. M.2 PCle SSD
   3. expansion card
   4. SD card reader
   5. processor
   6. heat sink
   7. heat sink fan
7. Close the front panel door.
8. Install the:
   1. front bezel
   2. side cover
9. Follow the procedure in After working inside your computer.