Fujitsu Memory 4GB DDR3-1066 f/ Lifebook S710 & E780, 4 GB, DDR3, 1066 MHz, 204-pin SO-DIMM Fujitsu Memory 4GB DDR3-1066 f/ Lifebook S710 & E780. Internal memory: 4 GB, Internal memory type: DDR3, Memory clock speed: 1066 MHz, Memory form factor: 204-pin SO-DIMM