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. With a total capacity of 4GB, this RAM is non-ECC unbuffered and manufactured by Crucial, a trusted brand in the industry. The module features a single rank x8 design, a frequency of 2400MHz, and a bus speed of PC4-19200. It comes with a lifetime manufacturer warranty, ensuring reliability and performance for your computing needs. With a form factor of SO-DIMM and a compact size of 68mm x 30mm x 3mm, this RAM module is a great upgrade for your laptop's memory capacity.