Can I add 16GB RAM and mix it up with my current 8GB RAM, but in the same speed like 2400 MHz? - Quora
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A-Tech 16GB Kit (2x8GB) RAM for Dell Latitude E7440, E7240, E6540, E6440, E5540, E5440 Laptop | DDR3/DDR3L 1600 MHz SODIMM PC3L-12800 Memory Upgrade at Amazon.com
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