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Two green DDR4 UDIMM modules, no heat spreaders, 288-pin edge connectors

NEMIX RAM

NEMIX RAM 32GB (2x16GB) DDR4 2666 ECC UDIMM CL19 1.20V 288-Pin ASUS LOCKERSTOR NAS Memory

SKU CH-9ASR-4DJBQ

A 32GB dual-channel DDR4 2666 ECC UDIMM kit with CL19 timing and 1.20V operation for ASUS LOCKERSTOR NAS systems

  • Capacity32GB (2 x 16GB)
  • Type288-Pin DDR4 ECC UDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.20V
  • ECCYes
  • ECC protection prevents data corruption in NAS workloads
  • 32GB kit (2×16GB) expands ASUS Lockerstor capacity
  • DDR4 2666 CL19 at 1.20V matches system specs
  • Unbuffered 288-pin UDIMM fits compatible NAS slots
  • Major OEM chips (Samsung, Micron, Hynix) ensure reliability

32 GB DDR4 ECC UDIMM kit

This NEMIX RAM kit supplies 32 GB across two 16 GB DDR4 2666 ECC unbuffered UDIMM modules. It runs at CL19 latency with a 1.20 V operating voltage and uses 288-pin connectors. The kit is validated for ASUS LOCKERSTOR NAS devices and built with major OEM DRAM chips.

Who this suits and who it does not

This kit suits administrators upgrading compatible ASUS LOCKERSTOR NAS units that require DDR4 ECC unbuffered memory. It is not for systems that only accept registered or load-reduced DIMMs. Buyers needing non-ECC modules or a different DDR generation should look elsewhere.

DDR4 2666 ECC unbuffered specification

The decisive specification is the DDR4 2666 ECC unbuffered UDIMM format with CL19 timing. Verify that the target NAS or server platform supports this exact speed, voltage and module type before purchase.

Highlights

  • ECC protection prevents data corruption in NAS workloads
  • 32GB kit (2×16GB) expands ASUS Lockerstor capacity
  • DDR4 2666 CL19 at 1.20V matches system specs
  • Unbuffered 288-pin UDIMM fits compatible NAS slots
  • Major OEM chips (Samsung, Micron, Hynix) ensure reliability

Specifications

BrandNEMIX RAM
SeriesASUS LOCKERSTOR NAS Memory
ModelASUS LOCKERSTOR NAS Memory
Part NumberME21300-618K2
Capacity32GB (2 x 16GB)
Type288-Pin DDR4 ECC UDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.20V
ECCYes
Buffered/RegisteredUnbuffered
Rank1Rx8
ChipsetMajor OEM Samsung, Micron, Hynix
Heat SpreaderNo
FeaturesDDR4 ECC Unbuffered UDIMM Motherboard Compatible

Questions about this item

Will the 2666 speed run at its rated frequency in my ASUS Lockerstor NAS?

The modules are rated DDR4 2666 PC4-21300 and will operate at that speed provided the NAS memory controller supports 2666 MT/s.

Does the ECC UDIMM interface require a registered DIMM slot or a specific chipset?

These are unbuffered ECC UDIMMs, so they need a standard 288-pin DDR4 slot that accepts unbuffered ECC memory, not a registered DIMM slot.

Will the two 16 GB sticks fit side-by-side in the Lockerstor chassis without a heat spreader?

Each module is a standard-height 288-pin DDR4 UDIMM without a heat spreader, so they occupy the normal DIMM footprint and clear adjacent slots.

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