Dell Precision 7720 Owner's Manual

Installing the left IO board

1. Slide the I/O board into its slot on the computer.
2. Install the thunderbolt bracket.
3. Replace the M2.5x5.0 screws to secure the I/O board to the computer.
4. Install the:
   1. palmrest
   2. keyboard
   3. hard drive
   4. base cover
   5. battery
   6. battery cover
5. Follow the procedures in After working inside your computer.