A-Tech 32GB DDR4 2666 ECC RDIMM 2Rx4 Samsung M393A4K40BB2-CTD Server Memory

32GB DDR4 2666 ECC Registered Module

This 32GB DDR4 2666 ECC RDIMM module is built for servers and workstations that require registered memory with error correction. It operates at 1.20V with a CAS latency of 19 and uses a 2Rx4 rank configuration on a 288-pin DIMM. The module serves as a direct replacement for Samsung part numbers M393A4K40BB2-CTD, M393A4K40CB2-CTD, and M393A4K40DB2-CTD.

Suited for ECC registered platforms only

This module fits systems that specifically support DDR4 ECC registered DIMMs at the 2666 speed grade. It will not work in desktop or laptop platforms that accept only unbuffered non-ECC memory, nor in servers requiring load-reduced or unregistered ECC modules. Buyers whose hardware demands a different voltage, pin count, or rank structure must select a different part.

Registered ECC with 2Rx4 organisation

The defining specification is the registered ECC design combined with a 2Rx4 rank layout, which determines compatibility with the memory controller and motherboard slot population rules. Verifying that the target system requires registered ECC RDIMMs and supports this rank configuration is the single step that confirms whether this module is the correct part.