The Hynix 512MB 2Rx16 PC2-4200S-444-12 memory module is a reliable and high-quality RAM upgrade for computers. With a total capacity of 512 MB and a bus speed of PC2-4200 (DDR2-533), this module offers fast and efficient performance for a wide range of computing tasks. As a product from the trusted brand Hynix, you can expect stability and compatibility with your system. Upgrade your computer's memory capacity with this dependable RAM module.