the rear adapter-retaining bracket rests against the computer side cover. you might find it easier to lay the computer on its side to replace the side cover.
complete the following steps to replace the side cover:
1. make sure that all cables, adapters, and other components are installed and seated correctly and that you have removed all work tools or parts from inside the computer.
2. install the side cover by placing it into position on the computer. make sure that the lip on the bottom of the cover rests on the ledge on the bottom of the chassis before rotating the cover up to the vertical position. press down on the cover-release latch as you slide the side cover forward to lock the side cover.
3. reconnect the external cables and power cords to the computer; then, connect the power cords to electrical outlets.
4. turn on the attached devices; then, turn on the computer.