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Two green DDR4 SODIMM sticks side by side, no heat spreaders

NEMIX RAM

NEMIX RAM 16GB (2x8GB) DDR4 2666 ECC SODIMM Kit DS1823xs+ memory upgrade

SKU CH-KHRJ-0XYS4

16 GB DDR4 2666 ECC SODIMM kit adds error-correcting memory to Synology DS1823xs+ NAS

  • Capacity16GB (2 x 8GB)
  • SpeedDDR4 2666 (PC4 21300)
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • ECC protection guards data integrity with built-in error correction
  • 2666 MT/s DDR4 speed matches DS1823xs+ controller specification
  • Dual 8 GB modules enable dual-channel bandwidth
  • 20 V low voltage reduces NAS power draw
  • 260-pin SODIMM form factor fits Synology RackStation slots

Synology DS1823xs+ DDR4 ECC SODIMM kit

This 16 GB kit contains two 8 GB DDR4 2666 ECC unbuffered SODIMM modules built for the Synology RackStation DS1823xs+. Each stick runs at 1.2 V with CL19 latency and uses a 260-pin layout. The memory is validated for NAS workloads that require error-correcting code reliability.

Suited for DS1823xs+ owners adding capacity.

The kit targets administrators expanding a DS1823xs+ beyond its factory configuration. Systems that cannot accept ECC unbuffered SODIMMs, or laptops and desktops requiring standard non-ECC memory, will not work with these modules. Buyers needing higher frequencies or lower latencies should look at other solutions.

Verify slot count, maximum capacity

Confirm the DS1823xs+ has free SODIMM slots and that the total installed memory will not exceed the platform limit. Check Synology’s hardware compatibility list and current DSM firmware for any population rules or rank restrictions before installing the 1Rx8 modules.

Highlights

  • ECC protection guards data integrity with built-in error correction
  • 2666 MT/s DDR4 speed matches DS1823xs+ controller specification
  • Dual 8 GB modules enable dual-channel bandwidth
  • 20 V low voltage reduces NAS power draw
  • 260-pin SODIMM form factor fits Synology RackStation slots

Specifications

BrandNEMIX RAM
SeriesSynology Compatible Series NAS Memory
ModelSynology DDR4 2666MHZ ECC Unbuffered SODIMM
Part NumberMSE21300-818K2
Capacity16GB (2 x 8GB)
SpeedDDR4 2666 (PC4 21300)
ECCYes
Buffered/RegisteredUnbuffered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemSynology
CAS LatencyCL19
Heat SpreaderNo
Type260-PIN DDR4 ECC SODIMM
Rank1Rx8
FeaturesDDR4 ECC Unbuffered SODIMM Motherboard Compatible
Package Content16GB (2X8GB) DDR4 2666MHZ PC4-21300 1Rx8 1.2V CL19 260-PIN ECC Unbuffered SODIMM KIT

Questions about this item

Does my Synology DS1823xs+ need to support DDR4 2666 ECC SODIMM modules for this kit to work?

Yes, the DS1823xs+ must accept DDR4 2666 ECC unbuffered SODIMMs at 1.2 V with a CAS latency of CL19 and 260-pin layout.

Will this 1Rx8 ECC kit run correctly if I leave an older non-ECC DDR4 SODIMM in the second slot?

Mixing ECC and non-ECC modules is not supported; the NAS will disable ECC or fail to boot, so all slots should use matching ECC SODIMMs.

How can I verify the kit is running at 2666 MT/s with ECC active after installation?

In DSM open Resource Monitor → Memory; it should show 16 GB at 2666 MHz and report ECC as enabled or corrected errors counted.

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