Dell Inspiron 15R (N5110, Early 2011) - Manual (Page 35)

Palm-Rest Assembly 35
6 Close the display and turn the computer over.
7 Replace the six screws that secure the palm-rest assembly to the computer
base.
8 Replace the battery (see "Replacing the Battery" on page 16).
CAUTION: Before turning on the computer, replace all screws and ensure that no
stray screws remain inside the computer. Failure to do so may result in damage to
the computer.