The Hynix 256MB Desktop RAM Memory Module HYMD232646B8J-D43 is a single DIMM module with a total capacity of 256MB. It operates at a bus speed of PC-3200 (DDR-400) and features ECC memory for enhanced error correction. Designed for desktop use, this RAM memory module is ideal for upgrading or replacing existing memory modules in a computer system. With the trusted brand of Hynix and reliable performance, this module is a dependable choice for improving the speed and efficiency of your computer.