This ProMOS Technologies DDR1 SDRAM memory kit consists of two modules, each with a capacity of 256 MB, for a total capacity of 512 MB. The modules have a bus speed of PC-3200 (DDR-400) and a CL3 latency. The item number for this kit is PC3200U-3033-0-A0 and the part number for each module is V826632K24SCTG-D3. This memory kit is compatible with various computer systems and is perfect for upgrading your existing system's RAM. Whether you are a gamer, a graphic designer, or just need more memory for multitasking, this ProMOS DDR1 SDRAM memory kit has got you covered.