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SAMSUNG M471A1K43CB1-CTD 8GB DDR4 2666MHz Memory Module - Memory Modules ( 8GB, 1 x 8GB, DDR4, 2666 MHz, 260-Pin SO-DIMM, Black, Green) at Amazon.com
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Amazon.com: Patriot Signature Series 8GB 2666MHz (PC4-21300) DDR4 SODIMM Memory Module : Electronics
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