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Two green DDR4 ECC UDIMM sticks, no heat spreaders

OWC

OWC 16GB (2x8GB) DDR4 2666 CL19 ECC UDIMM Kit for ASUSTOR AS7112RDX AS7116RDX

SKU CH-K88D-BNKE3

16 GB dual-channel DDR4 2666 CL19 ECC UDIMM kit for ASUSTOR AS7112RDX and AS7116RDX NAS

  • Capacity16GB (2 x 8GB)
  • Type288-Pin DDR4 ECC UDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 16GB (2 x 8GB)

  • ECC protection guards data integrity on compatible ASUSTOR NAS models
  • Dual 8 GB modules deliver 16 GB total capacity for heavier workloads
  • DDR4 2666 CL19 speed rating matches factory specifications exactly
  • 2 V low-voltage operation reduces power draw and heat output
  • JEDEC-standard unbuffered UDIMM design ensures straightforward drop-in installation

OWC 16GB DDR4 ECC UDIMM Kit

This 16GB kit contains two 8GB DDR4 2666 CL19 ECC unbuffered UDIMM modules built for ASUSTOR AS7112RDX and AS7116RDX LOCKERSTOR 12R and 16R PRO NAS systems. It delivers 16GB of error-correcting memory to support data integrity in storage workloads.

JEDEC Standard 288-Pin Unbuffered Design

Each module uses a 288-pin DDR4 interface at 1.2V with no heat spreader, fitting standard UDIMM slots in the compatible ASUSTOR units. The unbuffered layout keeps latency low while ECC provides single-bit error correction for reliable operation. JEDEC and RoHS compliance ensures a warranty-safe upgrade path.

Upgrade From 2133MHz or 2400MHz DDR4

The kit runs at 2666MHz (PC4-21300) and is backward compatible with 2133MHz and 2400MHz systems, so it can replace slower DDR4 ECC UDIMM modules in the same platforms. The jump is worth it when the NAS handles larger datasets, more concurrent users or virtualisation tasks that benefit from the higher bandwidth and 16GB total capacity.

Highlights

  • ECC protection guards data integrity on compatible ASUSTOR NAS models
  • Dual 8 GB modules deliver 16 GB total capacity for heavier workloads
  • DDR4 2666 CL19 speed rating matches factory specifications exactly
  • 2 V low-voltage operation reduces power draw and heat output
  • JEDEC-standard unbuffered UDIMM design ensures straightforward drop-in installation

Specifications

BrandOWC
Part Number2E6D41R8016P
Capacity16GB (2 x 8GB)
Type288-Pin DDR4 ECC UDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemASUSTOR AS7112RDX
ASUSTOR AS7116RDX

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Questions about this item

What speed and latency does the DDR4 2666 PC4-21300 CL19 kit run at in the ASUSTOR AS7112RDX?

The modules operate at 2666 MHz with CL19 timing; the AS7112RDX memory controller will run them at that speed and latency.

How many 288-pin DDR4 ECC UDIMM slots do the AS7112RDX and AS7116RDX need free for this 2 x 8 GB kit?

Both NAS units require two free 288-pin DDR4 ECC UDIMM slots to install the 16 GB kit.

What is the correct orientation step when inserting the 288-pin DDR4 ECC UDIMM modules into the ASUSTOR NAS?

Align the notch on the module with the key in the slot, press down firmly until the side clips click into place.

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