The ASU16D3LS1KBG/4G Kingston 4GB 1Rx8 DDR3 PC3L-12800S SO-DIMM Laptop Memory Ram is a high-quality memory module designed for laptops. With a total capacity of 4GB and a bus speed of PC3-12800 (DDR3-1600), this RAM is ideal for enhancing the performance and speed of your laptop. The SO-DIMM form factor and 204 pins make it compatible with a wide range of laptop models. Upgrade your laptop's memory capacity with this reliable and efficient Kingston RAM module.