Dell OptiPlex 7070 Micro Service Manual

Installing system board

1. To install the system board:
   1. Hold the system board by its edges and angle it towards the back of the system.
   2. Lower the system board into the system 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 system [1,2].
      
   3. Replace the two (M3x4) screws [1] and three (6-32x5.4) screws [2] to secure the system board to the system.
      
   4. Place the HDD caddy support on the system board [1].
   5. Replace the screw that secures the HDD caddy support to the system board [2].
      
2. Install the:
   1. Processor
   2. Heat sink
   3. Memory module
   4. Optional module
   5. M.2 PCIe SSD
   6. WLAN
   7. Heat sink blower
   8. 2.5 inch hard drive assembly
   9. Side cover
3. Follow the procedure in After working inside your computer.