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Crucial 32GB Kit (16GBx2) DDR4 2666 MT/s (PC4-21300) DR x8 SODIMM 260-Pin Memory - CT2K16G4SFD8266 at Amazon.com
Amazon.com: NEMIX RAM 32GB Kit (2 x 16GB) DDR4-2666 SODIMM 2Rx8 Memory for ASUS Motherboards: Computers & Accessories