The Kingston 4GB 2Rx8 DDR3 PC3-10600S-9-10-F20 Laptop RAM Memory is a reliable and high-performance memory module designed for laptops. With a total capacity of 4GB and a bus speed of PC3-10600 (DDR3-1333), this RAM module is suitable for enhancing the speed and efficiency of your computer system. The DDR3 SDRAM technology ensures faster data transfer speeds, while the ECC memory feature adds error correction capabilities for improved stability. Backed by a lifetime manufacturer warranty, this RAM module is a dependable choice for increasing your laptop's memory capacity.