Here's the deal regarding RAM upgrades in the XPS 15 (9500)

[Windows Central]

Best answer: Yes, RAM in the Dell XPS 15 9500 can be replaced and upgraded after purchase. There are two SODIMM slots easily accessible after removing the bottom panel. The XPS 15 9500 supports up to 64GB of DDR4-2933MHz RAM in a dual-channel configuration.

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