The Crucial 4GB DDR4 2400 MHz PC4-19200 1Rx8 SODIMM Laptop Memory RAM (CT4G4SFS824A) is a high-quality memory module designed for laptops and notebooks. It features a total capacity of 4GB and a frequency of 2400MHz, ensuring fast and efficient performance. The RAM is non-ECC unbuffered and comes in a SO-DIMM form factor, making it compatible with a wide range of devices. With a lifetime manufacturer warranty and a single module included in the package, this Crucial RAM is a reliable choice for upgrading your laptop's memory capacity.