The Kingston 256MB PC133 133Mhz 144pin SDRAM SODIMM Laptop Memory RAM is a high-quality memory upgrade for laptops that require DDR SDRAM modules with a PC-133 bus speed. This product includes 10 256MB SO-DIMM modules from the trusted brand Samsung, ensuring reliable performance and compatibility with your device. With a total capacity of 256MB and a lifetime manufacturer warranty, this RAM upgrade is a cost-effective solution for enhancing your laptop's memory capacity and speed.