This IBM 3022-9406 Memory 128MB Main Storage DIMM is a high-quality server main storage memory module. It has a total capacity of 128 MB and comes in a DIMM form factor. The module is a single module with a capacity of 128 MB per module. It is compatible with various server models and is an essential component for enterprise networking and server components. The brand of the module is IBM, which ensures its reliability and quality. This memory module is perfect for those looking to upgrade their server's main storage capacity.