HPE P50309-B21 16GB DDR5 ECC RDIMM Smart Memory Kit

Overview

The P50309-B21 is a 16GB single-rank DDR5 RDIMM running at 4800 MT/s (PC5-38400), designed for HPE ProLiant Gen11 servers that require HPE Smart Memory validation. This kit delivers a single 16GB 288-pin RDIMM with ECC data integrity checking — the right pick when expanding memory in density-constrained 1P or 2P rack servers where validated, platform-matched memory is a hard requirement. ECC protection catches and corrects single-bit errors in real time, which matters in 24/7 workloads where a silent memory fault would otherwise corrupt data or trigger unplanned downtime. At CL42 latency, this module operates at the native DDR5-4800 standard — no compromises on rated throughput.

Compatibility

This kit is validated for HPE ProLiant Gen11 server platforms that support DDR5 RDIMM Smart Memory, including the ProLiant DL360 Gen11, DL380 Gen11, DL560 Gen11, and ML350 Gen11 series. HPE Smart Memory designation means the module is recognized by the server's BIOS for full platform feature support, including Advanced Memory Protection and HPE memory mirroring configurations. Non-HPE branded DDR5 modules in these slots may operate in non-optimal mode or trigger platform warnings — P50309-B21 avoids that entirely. Verify your server's DIMM slot population rules before ordering: Gen11 platforms enforce population sequencing, and single-module installs must follow the slot assignment order in the server's QuickSpecs to run at full rated speed.

Installation Notes

The 288-pin RDIMM seats into standard DDR5 DIMM slots — no tools required beyond standard ESD precautions. Follow HPE's slot population order strictly; skipping required slots forces the platform into reduced-bandwidth or single-channel mode. Ground yourself before handling and seat the module until both retention clips lock. Server power must be fully off before installation.