The K-Byte premium Performance memory Upgrade is a high-quality DDR SDRAM DIMM module with a total capacity of 256 MB. It features a capacity per module of 512 MB and a bus speed of PC-100. With its premium brand and reliable performance, this memory upgrade is designed to enhance the performance of your computer by providing additional memory capacity for smooth operation. Upgrade your system with this K-Byte memory module for improved speed and efficiency.