This Mushkin Enhanced DDR1 SDRAM module has a total capacity of 512 MB with a capacity of 512 MB per module. It operates at a bus speed of PC-3200 (DDR-400) and has 184 pins. The item is a single module with a form factor of DIMM and model number KVR400/512R. The manufacturer warranty for this memory module is none.This item is perfect for anyone looking to upgrade their computer's memory and improve its performance. With its easy installation process and reliable brand, this Mushkin Enhanced DDR1 SDRAM module is a great choice for any computer enthusiast.