Crucial PC3-8500 4GB SO-DIMM 1066 MHz PC3-8500 DDR3 SDRAM Memory (CT4G3S1067M) for sale online | eBay
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G.Skill F3-8500CL7S-4GBSQ 4GB (1x4GB) DDR3-1066Mhz PC38500 SODIMM RAM at Amazon.com