This 128GB DDR5 Registered DIMM (RDIMM) from Micron, running at 5600MHz configured as 2Rx4, running at CAS latency CL46. As a Registered DIMM (RDIMM), it is a server-class module — the on-module register buffers the command/address signal, which reduces electrical load and lets a server motherboard reliably support many densely-populated DIMM slots, but it requires a server/workstation platform whose memory controller specifically supports registered memory, and will not work in a typical desktop board. Matching capacity, speed, and form factor exactly to the target system (and, for a multi-module upgrade, matching modules to each other) is what lets DDR5 memory run reliably at its full rated speed rather than falling back to a slower, auto-negotiated speed or failing to POST altogether. It ships with ECC protection with the register that defines RDIMM memory. The module uses 32Gbit density dies. Micron is one of only three companies in the world that manufactures its own DRAM die (alongside Samsung and SK hynix), rather than buying chips from a third party and simply assembling the module — meaning this stick's memory chips and the finished module are both genuinely Micron-made. At 128GB per module, this is a genuinely large-capacity server DIMM, aimed at densely-populated multi-channel server platforms running memory-hungry workloads like virtualization, in-memory databases, or large-scale application servers, sold as a single module (not a matched kit). It ships with the standard manufacturer warranty and is aimed at builders, upgraders, and IT professionals in South Africa who need accurate specifications to match against their existing platform.