Dell P80G Service Manual page 53

Steps
1 Locate the LED board slot on your computer.
2 Align and place the LED board on the slot on your computer.
3 Install the single (M2x3) screw that secures the LED board to the computer.
4 Adhere the LED board cable to the adhesive strip on the computer.
5 Connect the LED board cable to the connector on the system board.
Next step
1 Install the inner frame.
2 Install the WWAN card.
3 Install the WLAN card.
4 Install the HDD.
5 Install the solid state drive.
6 Install the battery.
7 Install the base cover.
8 Follow the procedure in After working inside your computer.
Disassembly and reassembly 53