The Kingston 4GB PC3L-12800S DDR3 1600MHz 204pin SO-DIMM Laptop Memory module is a high-quality memory upgrade for laptop computers. With a total capacity of 4GB and a bus speed of PC3-12800 (DDR3-1600), this single module provides fast and efficient performance for your computing needs. Designed in the SO-DIMM form factor, it is compatible with laptops that require a 204-pin memory module. Upgrade your system with this reliable and well-known Kingston memory module for improved speed and productivity.