The product is a set of 50 Samsung DDR3 SDRAM SO-DIMM laptop RAM modules with a total capacity of 200GB. Each module has a capacity of 4GB and a bus speed of PC3-12800 (DDR3-1600). These modules are designed for high performance and durability, with ECC memory features for error correction. The manufacturer offers a lifetime warranty for added peace of mind. Perfect for upgrading or replacing existing memory modules in laptops, these RAM modules provide ample storage capacity for smooth and efficient computing.