This Samsung DDR1 SDRAM memory kit includes 2 modules with a total capacity of 256MB, each module having a capacity of 512MB. It has a bus speed of PC-3200 (DDR-400) and features ECC Memory. The memory kit has 184 pins and a custom SKU of 1022. This memory kit is compatible with various computer systems and can be used for upgrading or replacing the existing memory. It is ideal for users who require reliable and high-speed memory for their computing needs.