Max system memory is 16GB and an 8GB DDR4 SODIMM (2400MHz) is factory installed. Both an 8GB module and a 16GB (2x8GB) kit are listed as compatible. Is it OK just to add the 8GB Crucial module or do I need to replace it and buy the kit. (Dell equivalent 8GB module is twice the price which makes me think they may neot be the same?)
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