Dell Inspiron 23 (2350, Mid 2013) - Manual (Page 21)

Replacing the Memory
Module(s)
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 dell.com/regulatory_compliance.
Procedure
NOTE: If you are installing only one memory module, insert the memory
module in the memory-module slot marked as DIMM1.
1 Align the notch on the memory module with the tab on the memory-
module slot.
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