The Crucial 2GB Set of 1GB DDR2-667MHz (PC2-5300) Non-ECC, Unbuff CL5, 240-pin DIMM memory modules are designed for desktop computers. With a total capacity of 2GB split into two 1GB modules, these DDR2 SDRAM DIMMs offer reliable performance at 1.8 volts. The Crucial brand ensures high quality, and the standard profile and 240-pin design make them compatible with a wide range of systems. Upgrade your computer's memory capacity with this essential component from Crucial.