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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

  • Total capacity32 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeUnbuffered
  • Rated voltage1.1 V

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.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $594.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 32 GB
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $18.59 per GB
Pricier than about 64% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineQNAP NAS Compatible Series Memory
Model nameQNAP DDR5 4800 MHz ECC Unbuffered UDIMM NAS Memory
Part numberME38400-328K1
Total capacity32 GB
Product type288-Pin DDR5 ECC UDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsQnap
In the box
Included items32 GB (1 × 32 GB) DDR5 4800 MHz PC5-38400 2Rx8 1.1 V CL40 288-PIN ECC Unbuffered UDIMM

Other versions of this model

5 more in the same range

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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