Dell Inspiron 15 (3531, Mid 2014) - Manual (Page 9)

Specifications
Views
Battery
System
Information
Memory
Ports and
Connectors
Dimensions and
Weight
Computer
Environment
Storage
Touchpad Power Adapter Camera
Communications Video Audio
Display
Media‑Card
Reader
Keyboard
Memory
Slot One SODIMM slot
Type DDR3L
Speed Up to 1600 MHz
NOTE: The processor installed on your computer allows the memory to run only
at 1333 MHz speed.
Configurations supported 4 GB