SK hynix HMA42GR7AFR4N-TF 16GB DDR4 2133MHz CL15 ECC Registered Dual Rank 1.2V 288-Pin Server RAM
- 16GB
- 288-Pin DDR4 SDRAM
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Brute Networks
16 GB registered ECC DDR4-2400 RDIMM with CL15 latency for HP-compatible servers
This is a 16GB 288-Pin DDR4 SDRAM module rated at 2400MHz PC4-19200 with CL15 latency and 1.20V operation. It uses a 1Rx4 registered ECC design built with major-brand chips from Samsung, SK Hynix or Micron. The part matches HP part number 805349-B21 for direct replacement in supported servers.
Administrators expanding capacity in compatible HP platforms will receive identically matched DIMMs validated for OEM equivalence. Workstations or consumer boards that require unbuffered non-ECC DIMMs cannot use this registered module. Buyers needing higher speeds, different ranks or larger single-module capacities must select a different part.
The module presents a single-rank registered ECC configuration at DDR4-2400 with CL15 timing. Systems that require registered ECC memory and support this speed and rank organisation will accept it. Platforms limited to unbuffered memory, non-ECC operation, or other speeds and ranks will not.
| Brand | HP |
|---|---|
| Capacity | 16GB |
| Type | 288-Pin DDR4 SDRAM |
| Speed | DDR4 2400 (PC4 19200) |
| CAS Latency | CL15 |
| Voltage | 1.20V |
| ECC | Yes |
| Buffered/Registered | Registered |
| Rank | 1Rx4 |
| Chipset | Major Brand Chipset |
Yes, the module uses the standard 288-pin DDR4 RDIMM form factor that matches HP server memory slots.
Align the notch with the slot key, press firmly until both retention clips click, and verify the module sits flush — partial seating causes boot failure.
Replace only if memory diagnostics report correctable ECC errors rising above threshold or the module fails POST; otherwise it runs for the server life.
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