The Kingston KVR133X64C3/512 RAM is a 512 MB SDRAM DIMM with a bus speed of PC-133. It is designed for use in computers and networking devices, providing reliable performance and stability. With a lifetime manufacturer warranty, you can trust that this RAM will meet your memory needs for years to come. The ECC memory feature adds additional error correction capabilities, making it a more dependable choice for sensitive applications. Upgrade your system with this high-quality Kingston RAM for improved speed and efficiency.