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OWC 8GB PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Module Upgrade Compatible with iMac, Mac Mini, and MacBook Pro (OWC1600DDR3S8GB) at Amazon .com
G.Skill Ripjaws Series 8GB 204-Pin DDR3 SO-DIMM DDR3 1600 (PC3 12800) Laptop Memory (F3-1600C9S-8GRSL) at Amazon.com
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8GB DDR3L-1600 SODIMM 16GB Kit (2x8GB) PC3L-12800S DDR3 1600Mhz 2Rx8 1.35V Dual Rank RAM for Laptop at Amazon.com
TEAMGROUP Elite DDR3L 16GB Kit (2 x 8GB) 1600MHz PC3-12800 CL11 Unbuffered Non-ECC 1.35V SODIMM 204-Pin Laptop Notebook PC Computer Memory Module Ram Upgrade - TED3L16G1600C11DC-S01 at Amazon.com