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HP 4GB (1x4GB) DDR3-1866 MHz ECC RAM at Amazon.com
Samsung M391B1G73QH0-CMA DDR3-1866 8GB/512Mx8 ECC CL13 Samsung Chip Server Memory Bulk OEM at Amazon.com
Synology RAM DDR3L-1866 SO-DIMM 4GB (D3NS1866L-4G) at Amazon.com
parts-quick 16GB Memory for Gigabyte GS-R22PE Server DDR3 PC3-14900 1866 MHz ECC Registered DIMM RAM at Amazon.com
MemoryMasters Compatible 4GB PC3L-14900 DDR3-1866MHz SoDimm Non-ECC Unbuffered CL13 Single Rank Ram Memory Module MT8KTF51264HZ-1G9E2 at Amazon .com
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Kingston HyperX FURY 4GB 1866MHz DDR3 CL10 DIMM -Blue (HX318C10F/4) at Amazon.com
G.SKILL Ripjaws X Series 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1866 (PC3 14900) Desktop Memory Model F3-14900CL9Q-16GBXL at Amazon.com
Global Memory 4GB DDR3 1066/1333/1600/1866MHz 204-PIN SODIMM Memory Ram for Laptops/Notebooks at Amazon.com
Arch Memory Replacement for HP E5Z83AA 4GB 240-Pin DDR3 1866 MHz UDIMM RAM at Amazon.com
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A-Tech 4GB DDR3 1866MHz PC3-14900 CL13 UDIMM 1.5V Non-ECC DIMM 240-Pin Desktop RAM Memory Upgrade Module at Amazon.com
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12GB (1 x 4GB + 1 x 8GB) PC14900 DDR3 1866MHz SO-DIMMs 204-Pin Memory Upgrade Compatible with 2015 (Late) iMac 27" w/Retina 5K Models and PCs (OWC1867DDR3S12S) at Amazon.com
A-Tech 4GB DDR3 1866MHz PC3-14900 CL13 UDIMM 1.5V Non-ECC DIMM 240-Pin Desktop RAM Memory Upgrade Module at Amazon.com
Micron 4GB PC3L-14900 DDR3-1866MHz SoDimm Non-ECC Unbuffered CL13 Single Rank Ram Memory Module MT8KTF51264HZ-1G9E2 at Amazon.com
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Corsair Vengeance Blue 8GB (2x 4GB) PC3-15000 1866MHz DDR3 Memory Kit for and Dual Channel Processors at Amazon.com
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Amazon.com: OWC 4GB PC14900 DDR3 ECC 1866MHz DIMM Memory Compatible with Mac Pro Late 2013 Models (OWC1866D3ECC04G) : Everything Else
