Service Manual

Replacing the memory module

WARNING: Before working inside your computer, read the safety

information that shipped with your computer and follow the steps in Before

working inside your computer. After working inside your computer, follow

the instructions in After working inside your computer. For more safety best

practices, see the Regulatory Compliance home page at

www.dell.com/

regulatory_compliance.

Procedure

NOTE: Alienware X51 R3 supports only DDR4 memory modules. If you are

adding additional memory modules or upgrading the memory modules,

ensure to use DDR4 UDIMMs.

1 Align the notch on the memory module with the tab on the memory-module slot.