Expand compatible server and workstation memory with a 16 GB DDR5-4800 ECC registered DIMM. Registered DIMMs buffer memory control signals between the processor memory controller and the DRAM devices, supporting the memory architecture used by systems built for RDIMM operation. ECC memory adds error-correction capability for platforms whose processors and firmware support ECC operation. The 1Rx8 organization denotes a single-rank module constructed with x8 DRAM devices. This organization matters when populating memory channels because server platforms can impose limits on rank count, DIMM population order, and supported memory configurations. Match the module type, DDR generation, speed class, and ECC RDIMM requirement to the host system before installation. DDR5 RDIMMs are mechanically and electrically different from earlier DDR memory generations and from unbuffered DIMMs. ACCORTEC AC239377-ACC supplies one 16 GB DDR5-4800 ECC RDIMM for capacity expansion or replacement in compatible systems. Its combination of DDR5 operation, registered architecture, ECC support, and 1Rx8 layout distinguishes it from non-ECC desktop DIMMs, unbuffered ECC modules, and multi-rank server memory configurations. Install it in a platform memory slot specified for DDR5 registered ECC memory, following the system vendor's channel-population guidance.