The product is a set of 25 Micron PC3-12800S (DDR3-1600) laptop RAM modules with a total capacity of 200GB. Each module has a capacity of 8GB and is in SO-DIMM form factor. The bus speed for these DDR3 SDRAM modules is PC3-12800 (DDR3-1600), and they have a total of 204 pins. These modules have been tested and are ready for use in laptops requiring DDR3 memory technology.