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I5 Silver Dell Latitude E4310, RAM: 4 GB, Screen Size: 13 Inch
Dell Latitude E4310 RAM Replacement - iFixit Repair Guide
4GB Memory for Dell Latitude E4310 E5410 E5510 E6410 E6410 ATG E6510 DDR3 PC3-10600 1333MHz SODIMM RAM (Parts-Quick Brand) at Amazon.com