The Samsung 4GB 1Rx8 DDR3 PC3L-12800S Laptop Memory SODIMM RAM M471B5173QH0-YK0 is a high-quality memory module designed for laptops. With a total capacity of 8GB divided into two 4GB modules, this DDR3 SDRAM RAM provides fast and efficient performance for your computing needs. The SO-DIMM form factor ensures easy installation and compatibility with various laptop models. Made with reliable Samsung technology and a bus speed of PC3-12800 (DDR3-1600), this RAM is a dependable choice for upgrading your laptop's memory capacity.