Dell Latitude 7424 Rugged Extreme Service Manual

Installing the Rear I-O board

1. Install the rear I/O board on the system board and slide the serial port through the face plate .
   

   NOTE Screws can be tightened over the rear I/O daughterboard only after installing the Docking port assembly.
2. Connect the I/O board FPC[1] to the motherboard and then to I/O board itself [2].
   
3. Open the rear door [1] and tighten the two epoxy cap screws on serial port in the rear I/O space [2].
   
4. Install the:
   1. Docking port assembly
   2. PCIe heatsink fan assembly
   3. WWAN card
   4. WLAN card
   5. Bottom chassis cover
   6. Batteries
5. Follow the procedure in After working inside your computer.