8GB DDR4 PC4-25600 3200MHz 260-pin SODIMM. 16GB DDR4 PC4-25600 3200MHz 260-pin SODIMM. 32GB DDR4 PC4-25600 3200MHz 260-pin SODIMM. You can install different sized modules together in your machine. For example: Installing 2 x 8GB alongside 2 x 4GB will be 100% compatible.
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