The Kingston 8GB DDR3-1066MHz PC3-8500S 204-Pin SODIMM RAM Kit includes two 4GB modules, providing a total capacity of 8GB. Designed for laptops and other devices that use SO-DIMM memory, this DDR3 SDRAM kit is manufactured by Kingston and has a bus speed of PC3-8500S. The memory modules are compatible with a wide range of computers and are reliable for everyday use. Made in China, this RAM kit is an excellent choice for upgrading or replacing existing memory modules in laptops and other devices.