JEDEC JESD305-R4-RCB Version 1.0

This standard, JESD305-R4-RCB, DDR5 Registered Dual Inline Memory Module with 4-bit ECC (EC4 RDIMM) Raw Card B Annex, defines the design detail of x4, 2 Package Ranks DDR5 RDIMM with 4-bit ECC. The common feature of DDR5 RDIMM, such as the connector pinout, can be found in the JESD305, DDR5 Load Reduced (LRDIMM) and Registered Dual Inline Memory Module (RDIMM) Common Standard.