We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Two green DDR4 ECC UDIMM sticks, 288-pin, no heat spreader

OWC

OWC 32GB (2x16GB) DDR4 2666MHz ECC UDIMM for Synology RS3617RPxs RS3617xs+ memory upgrade

SKU CH-4Z5T-6NJVK

32 GB kit of two 16 GB DDR4 2666 MHz ECC unbuffered UDIMMs for Synology RS3617RPxs and RS3617xs+ NAS

  • Capacity32GB (2 x 16GB)
  • Type288-Pin DDR4 ECC UDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 32GB (2 x 16GB)

  • 32 GB capacity with two 16 GB modules for expanded NAS workloads
  • DDR4 2666 MHz CL19 speed matches Synology RackStation RS3617RPxs and RS3617xs+ specs
  • ECC unbuffered design protects data integrity in 24/7 server environments
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Backward compatible with 2133 MHz and 2400 MHz systems

32GB DDR4 2666 ECC UDIMM kit

This OWC kit provides 32GB of DDR4 2666MHz ECC unbuffered memory in a matched pair of 16GB modules. Each 288-pin DIMM runs at 1.2V with CL19 latency and a 2Rx8 organisation. The kit is validated for Synology RackStation RS3617RPxs and RS3617xs+ systems.

Who this suits and who it does not

This upgrade fits owners of the listed Synology RackStation models who need ECC UDIMM memory at 2666MHz. It will not suit builders who need registered or load-reduced DIMMs, systems that require a different DDR generation, or configurations that demand a higher module density than 16GB per stick.

Deciding specification — ECC UDIMM at 2666MHz

The defining attribute is the combination of ECC error correction with an unbuffered 288-pin DDR4 2666MHz interface. Only platforms that accept ECC UDIMMs at this speed can use the kit; registered DIMM slots or non-ECC consumer boards will not support it.

Highlights

  • 32 GB capacity with two 16 GB modules for expanded NAS workloads
  • DDR4 2666 MHz CL19 speed matches Synology RackStation RS3617RPxs and RS3617xs+ specs
  • ECC unbuffered design protects data integrity in 24/7 server environments
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Backward compatible with 2133 MHz and 2400 MHz systems

Specifications

BrandOWC
Part Number2E6D42R8032P
Capacity32GB (2 x 16GB)
Type288-Pin DDR4 ECC UDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemSynology RackstationRS3617RPxs
Synology RackstationRS3617xs+

Other versions of this model

5 more in the same range

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

Questions about this item

Does the Synology RS3617xs+ need any existing memory removed before installing this 32GB kit?

The kit provides 32GB across two 16GB modules; whether you must remove existing DIMMs depends on how many slots your RS3617xs+ has and how they are currently populated.

Will these 2666MHz ECC UDIMMs run reliably in a Synology RS3617RPxs that currently uses 2133MHz memory?

Yes, the modules are backward compatible with 2133MHz and 2400MHz systems, so they will operate at the lower speed when installed alongside existing 2133MHz DIMMs.

How can I confirm the RS3617RPxs is using the new 32GB kit at the correct 2666MHz CL19 settings after installation?

Check the memory section in DSM's Resource Monitor or the hardware details in Control Panel; it should show 32GB total, DDR4 2666MHz, ECC unbuffered, and CL19 timings.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.