This is a 256MB DDR-400MHz-CL3 PC3200U-30330 RAM module from Elixir. It is a 256MB single-sided memory module with a 400MHz clock speed and CL3 latency rating. This RAM module is compatible with motherboards that support DDR-400 specifications. This is a suitable option to expand or upgrade your PC's memory, offering fast and reliable performance. The module provides crucial memory access speeds for a robust system.