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49Y3778-HY
49Y3779-HY
4GB PC2-6400
4GB ( 2 x 2GB) FBD PC2-5300
4GB 1333MHz SODIMM Module
4GB 400MHz DDR PC3200 (Legacy)
4GB DDR-266
4GB DDR2 667MHz Memory Module
4GB DDR2 667MHz PC2-5300 ECC Reg FB 240-pin DIMM
4GB DDR2 PC2-6400
4GB DDR2 SO-DIMM (Legacy)
4GB DDR2-800 (Legacy)
4GB DDR3
4GB DDR3 1066MHz
4GB DDR3 1333MHz
4GB DDR3 1333MHZ (Legacy)
4GB DDR3 1333MHz Memory Module
4GB DDR3 1600
4GB DDR3 1600MHz
4GB DDR3 1600MHz PC3-12800
4GB DDR3 DIMM
4GB DDR3-1066
4GB DDR3-1333
4GB DDR3-1333 DIMM PC3-10600
4GB DDR3-1333 PC3-10600
4GB DDR3-1333MHz ECC
4GB DDR3-1333MHz, CL9
4GB DDR3-1600
4GB ECC DDR3 RDIMM
4GB Memory Kit