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Four green DDR4 ECC UDIMM sticks, no heat spreaders

OWC

OWC 32GB (4x8GB) DDR4 2666 ECC UDIMM memory upgrade

SKU CH-H5DD-973E4

32GB DDR4 2666 ECC UDIMM kit (4×8GB, CL19, 1.2V) validated for ASUSTOR AS7112RDX and AS7116RDX NAS systems

  • Total capacity32 GB (4 × 8 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank1Rx8

Capacity 32GB (4 x 8GB)

  • 32 GB capacity for heavy multitasking across four 8 GB modules
  • DDR4 2666 speed with CL19 latency for responsive data access
  • ECC unbuffered design protects data integrity in NAS workloads
  • JEDEC-standard 1.2 V operation ensures broad platform compatibility
  • Validated for ASUSTOR AS7112RDX and AS7116RDX lockers

OWC 32GB DDR4 ECC kit for ASUSTOR NAS

This kit contains four 8 GB DDR4 2666 ECC unbuffered UDIMMs validated for the ASUSTOR AS7112RDX and AS7116RDX. It is intended for owners of those rack-mount NAS units who need error-correcting memory to protect stored data. Builders using consumer motherboards without ECC support cannot use the error-correction feature.

Tool-free DIMM installation with ECC caveats

The modules fit standard 288-pin DDR4 slots and require no special tools; the supplier notes that most users complete the upgrade themselves. The sticks have no heat spreaders, so they sit low in tight drive bays. If the NAS BIOS does not enable ECC, the modules will still run but without error correction, negating their primary benefit.

Steady 2666 MT/s operation at 1.2 V

Rated CL19 at 2666 MT/s (PC4-21300), the memory maintains its JEDEC-standard timings under continuous NAS workloads such as RAID rebuilds or long backup streams. The 1.2 V operating voltage keeps power draw predictable during sustained multi-hour tasks. Modules also down-clock to 2400 or 2133 MT/s if the system requires it.

How it compares

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

Price $249.99
Cheaper than about 56% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (4 × 8 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $7.81 per GB
Typical for this category: the median of 20,941 items is $8.19 per GB.

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number2E6D41R8032S
Total capacity32 GB (4 × 8 GB)
Product type288-Pin DDR4 ECC UDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASUSTOR AS7112RDX
ASUSTOR AS7116RDX

Other versions of this model

5 more in the same range

Questions about this item

How can I confirm the ECC UDIMM kit is running at 2666 MHz after installing it in my ASUSTOR AS7112RDX?

Enter the NAS BIOS or OS memory info screen and verify the speed shows 2666 MHz (PC4-21300) with CL19 timings and 1.2 V on all four modules.

What comes in the box and do I need any extra brackets or cables for the ASUSTOR AS7116RDX?

The kit includes four 8 GB 288-pin DDR4 ECC unbuffered UDIMMs; no brackets, cables or additional parts are required for installation.

Which capacity kit should I choose if my NAS has 12 bays and I want the maximum supported memory?

This 32 GB (4×8 GB) kit is the one listed for the AS7112RDX and AS7116RDX; install all four modules to reach the 32 GB total.

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