1GB RAM for the IBM Lenovo Thinkpad R51 Series and T42 Series Notebook Laptops (DDR-333, PC2700, SODIMM)
Made from the highest quality components, Arch Memory parts are designed to increase productivity and help your computer work faster. Arch Memory products are engineered to meet industry standard specifications and rigorously tested to ensure quality. Backed by free technical support, a lifetime warranty and legendary reliability, Arch Memory RAM is your best choice for upgrading your computer's memory.