The product is a lot of 20 Samsung 4GB PC3L-12800S DDR3L Laptop Memory modules, providing a total capacity of 80GB. Each module has a capacity of 4GB, with ECC memory features and a form factor of SO-DIMM. These memory modules are from the brand Samsung and have a bus speed of PC3-12800 (DDR3-1600). Made in China, they are designed for laptops and have 204 pins. Perfect for upgrading or replacing memory modules in laptops, these Samsung memory modules offer reliable performance and capacity.