32gb (4x8gb) new DDR4 3600 MHz CL18 ram modules.

From the manufacturer

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Lexar products are tested in order to meet the stated specifications as advertised. In case Lexar products are used in a system which may not operate in accordance with specifications as advertised by Lexar, or used together with other kits or memory modules from other manufacturers, Lexar will not warrant that products meet the above specifications. Furthermore, Lexar will not warrant that products meet the above specifications if a single module is paired with all other manufacturers’ DRAM module to operate as dual kit.

Product appearance, performance, software offerings, and packaging may vary depending on ship date and available inventory.