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Green bare DDR5 ECC UDIMM module with black chips, 288 pins

NEMIX RAM

NEMIX RAM 32GB DDR5 4800 ECC UDIMM CL40 2Rx8 1.1V 288-pin QNAP TS-H1277AXU-RP

SKU CH-2H5H-T852H

32 GB DDR5 4800 ECC UDIMM module with CL40 latency and 1.1 V operation for QNAP TS-H1277AXU-RP NAS

  • Capacity32GB
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V

Capacity 32GB

  • 32GB capacity expands NAS storage headroom
  • DDR5 4800 speed accelerates data throughput
  • ECC protection guards against silent data corruption
  • 1V operation reduces system power draw
  • Validated for QNAP TS-H1277AXU-RP compatibility

32GB DDR5 ECC UDIMM for QNAP TS-H1277AXU-RP

This 32GB DDR5 4800 ECC unbuffered UDIMM is built for the QNAP TS-H1277AXU-RP NAS. It suits administrators expanding memory for virtualisation, container workloads or large file-serving tasks where error correction protects data integrity.

Tool-less slot installation with ECC verification

The module inserts into a standard 288-pin DDR5 DIMM slot and requires no heat spreader removal. The only common issue is mixing ECC and non-ECC modules or populating slots in an order the NAS firmware does not expect, which prevents the system from posting.

Verify NAS model and slot population rules

Confirm the exact model is TS-H1277AXU-RP before ordering, as other QNAP units may require registered DIMMs or different voltages. Check the user manual for the approved slot sequence and maximum supported capacity per slot to avoid a failed boot.

Highlights

  • 32GB capacity expands NAS storage headroom
  • DDR5 4800 speed accelerates data throughput
  • ECC protection guards against silent data corruption
  • 1V operation reduces system power draw
  • Validated for QNAP TS-H1277AXU-RP compatibility

Specifications

BrandNEMIX RAM
SeriesQNAP NAS Compatible Series Memory
ModelQNAP DDR5 4800MHZ ECC Unbuffered UDIMM NAS Memory
Part NumberME38400-328K1
Capacity32GB
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredUnbuffered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemQnap
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 ECC UDIMM
Rank2Rx8
FeaturesDDR5 ECC Unbuffered UDIMM Motherboard Compatible
Package Content32GB (1X32GB) DDR5 4800MHZ PC5-38400 2Rx8 1.1V CL40 288-PIN ECC Unbuffered UDIMM

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Questions about this item

How can I verify the module is running at 4800 MT/s with CL40 timings after installing it in my TS-H1277AXU-RP?

Enter the NAS BIOS or use the QNAP system information page; both will report the memory speed as 4800 and the CAS latency as 40 when the module is operating correctly.

The package content lists one 32 GB stick — do I need to buy anything else to complete the upgrade?

No additional parts are required; the single 288-pin UDIMM is the complete upgrade for a compatible slot.

My NAS has multiple empty slots — should I choose the 2Rx8 32 GB version or look for a different capacity?

The 2Rx8 32 GB module is the only capacity offered in this specific ECC UDIMM line for the TS-H1277AXU-RP.

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