47J0146 Ibm 4gb (1x4gb) 1333mhz Pc3l-10600r Memory (海外取寄せ品) KOMPUTERBAY 4GB (2X2GB) Memory for IBM PN 46C7571 100% Compatible (DDR2 800MHz PC2-6400 ECC FB DIMM) (海外取寄せ品)