Dell Inspiron 3800 - Manual (Page 53)

Adding Parts 53
2 Disconnect any external devices, and remove any PC Cards from the
computer.
3 Connect the AC adapter to the connector on the APR, and connect
the AC power cable to an electrical outlet.
4 Horizontally center the computer on the APR base, with the back of
the computer facing the APR docking connector.
5 Slide the computer toward the connector until you feel the grooves on
the bottom of the computer engage with the alignment rails.
NOTICE: If you attempt to push the computer all the way into the APR
without engaging the alignment rails, you may irreparably damage the docking
connector on the computer. If you have a monitor stand installed, you will not
be able to see the alignment rails or the docking connector.
6 Gently push the computer forward until the docking connector is fully
engaged.
7 Slide the eject/locking lever towards the back of the APR to the locked
position.
docking connector
alignment rails (2)
eject/locking lever