Dell Alienware M17x R3 (Early 2011) - Manual (Page 26)

26 Memory Module(s)
4 To remove memory module(s) from connectors DIMM 1 and DIMM 2, go
to step 6.
5 To remove memory-module(s) from connectors DIMM 3 and DIMM 4:
a Remove the center control cover (see "Removing the Center Control
Cover" on page 49).
b Remove the keyboard (see "Removing the Keyboard" on page 55).
c Remove the three screws that secure the memory-module cover to the
palm rest assembly.
CAUTION: To prevent damage to the memory-module connector, do not use tools
to spread the memory module securing clips.
6 Use your fingertips to carefully spread apart the securing clips on each end
of the memory-module connector until the memory module pops up.
1 memory-module cover 2 screws (3)
2
1