Dell Inspiron 14 (N4050, Mid 2011) - Manual (Page 21)

Memory 21
4 Replace the keyboard. See "Replacing the Keyboard" on page 17.
5 Replace the battery, see "Replacing the Battery" on page 14, or connect the
AC adapter to your computer and an electrical outlet.
6 Turn on the computer.
As the computer boots, it detects the memory module(s) and automatically
updates the system configuration information.
To confirm the amount of memory installed in the computer:
Click Start Control PanelSystem and SecuritySystem.
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