Crucial 8gb Pc4-2133 1rx4 ECC RDIMM Server Memory Product Identifiers Brand Crucial MPN CT8G4RFS421318FA2 eBay Product ID (ePID) 584850417 Product Key Features Memory Features Registered, ECC Memory Number of Pins 288 Bus Speed PC4-17000 (DDR4-2133) Total Capacity 8 GB Form Factor RDIMM Capacity per Module 8 GB Type DDR4 SDRAM Number of Modules 1 Model