Dell RAM Memory Module A9781929 32GB DDR4 2666MHz Registered BufferedDell 32 GB Certified DDR4 RDIMM 2666MHz 2Rx4 Memory Module 32 GB DDR4 RDIMM 2666MHz 2Rx4 Memory Module Specifications for A9781929 Features Buffered Memory Type Registered (Buffered) Intended For PC Server ECC Yes Internal Memory 32 GB Internal Memory Type DDR4 Memory Clock Speed 2666 MHz Memory Form Factor 288 pin DIMM Memory Rank 2 Memory Voltage 1. 2 V Logistics Data Harmonized System (HS) Code 84733020 Other Features Chip Organization 2Rx4