Dell XPS 17 (L701X, Late 2010) - Manual (Page 18)

18 Memory Module(s)
5 Remove the memory module from the memory-module connector.
Replacing the Memory Module(s)
1 Follow the instructions in "Before You Begin" on page 9.
CAUTION: Install memory modules in the memory-module connectors as
indicated on the following table based on the number of memory modules you are
installing. Your computer may not start, if you fail to install the memory modules as
indicated in the table.
1 memory-module connector 2 securing clips (2)
3 memory module
3
2
1