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Two green DDR4 SODIMM modules with gold contacts, no heat spreader

OWC

OWC 32GB (2x16GB) DDR4 2666MHz CL19 ECC SODIMM 1.2V Synology DS723+ DS923+

SKU CH-PACN-58AJC

32 GB dual-channel DDR4 ECC SODIMM kit at 2666 MHz CL19 for Synology DS723+ and DS923+ NAS

  • Capacity32GB (2 x 16GB)
  • Type260-Pin DDR4 SO-DIMM
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCECC
  • Buffered/RegisteredUnbuffered

Capacity 32GB (2 x 16GB)

Struck-through versions exist but are not stocked here.

  • 32 GB kit boosts NAS capacity for heavier workloads
  • Dual-channel 2 × 16 GB layout maximises memory bandwidth
  • ECC protection detects and corrects single-bit errors automatically
  • JEDEC-standard DDR4-2666 CL19 at 1.2 V ensures broad compatibility
  • Validated for Synology DS723+ and DS923+ DiskStation systems

Compatible NAS Upgrade Kit

This 32GB dual-channel kit contains two 16GB DDR4 ECC SODIMM modules rated at 2666MHz CL19. It is built to JEDEC standards and validated for Synology DiskStation DS723+ and DS923+ NAS systems. The unbuffered design operates at 1.2V for broad micro server and POS compatibility.

Suitable and Unsuitable Use Cases

The kit suits administrators expanding memory in the listed Synology models or similar micro servers that accept 260-pin ECC SO-DIMMs. Builders needing non-ECC memory, registered DIMMs, or capacities beyond 32GB per kit should look at other configurations. Systems limited to 2133MHz or 2400MHz will still run these modules at the lower speed.

Deciding Specification

The 260-pin DDR4 SO-DIMM form factor with ECC and 1.2V operation is the single specification that determines fit. Verify the target device requires unbuffered ECC SODIMMs before purchasing.

Highlights

  • 32 GB kit boosts NAS capacity for heavier workloads
  • Dual-channel 2 × 16 GB layout maximises memory bandwidth
  • ECC protection detects and corrects single-bit errors automatically
  • JEDEC-standard DDR4-2666 CL19 at 1.2 V ensures broad compatibility
  • Validated for Synology DS723+ and DS923+ DiskStation systems

Specifications

BrandYes
Part Number2C6D42R8032P
Capacity32GB (2 x 16GB)
Type260-Pin DDR4 SO-DIMM
CAS LatencyCL19
Voltage1.2V
ECCECC
Buffered/RegisteredUnbuffered
Multi-channel KitDual-Channel
Heat SpreaderNo

Other versions of this model

2 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Should I pick the 2 x 16 GB kit or buy single 16 GB modules for my DS723+?

The 2 x 16 GB dual-channel kit is tested as a matched pair for the DS723+ and DS923+, so you get the full 32 GB upgrade in one step without mixing modules.

What does the 2666 MHz rating actually deliver inside a Synology NAS?

The modules run at 2666 MHz CL19 by default and will down-clock to 2400 MHz or 2133 MHz if the NAS memory controller requires it, keeping the system stable.

Does the 260-pin DDR4 SO-DIMM interface limit the bandwidth I can use?

The 260-pin DDR4 SO-DIMM slot caps transfer rates to the PC4-21300 standard, so 2666 MHz is the maximum supported speed on these NAS models.

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