The product is a set of 2 unopened Kingston KVR266X64C25/256 DDR266 256MB RAM modules. These RAM modules are designed specifically for Kingston motherboards and have a total capacity of 256 MB per module. The modules are guaranteed with a 30-day money-back warranty and are made in the United States. They are suitable for computers and laptops that require DDR-266 memory technology for optimal performance. Perfect for upgrading or replacing existing memory modules in your system.