The PNY Technologies Memory Master Upgrade Kit 256MB100 is a high-quality RAM upgrade for computer desktops. This kit includes a single 256 MB DIMM module with PC-133 bus speed and ECC memory features. It is a reliable and efficient upgrade option for enhancing the performance and capacity of your computer system. With the trusted PNY brand and compatibility with various desktop configurations, this upgrade kit is a great choice for improving your computer's memory capabilities.